Use the figure the problem. A mass m = 0.5 kg is hung from a pulley with moment of inertia I = 0.20kg.mS1U1P12S1S1P0 and radius R = 10cm. There is friction in the pulley. The mass is dropped from rest, and after 2s it traveled 4m. -What is the angular acceleration of the pulley?

A) 2 rad/s2 B) 5 rad/s2 C) 10 rad/s2 D) 20 rad/s2 E) 40 rad/s2 A) 2 rad/s2 B) 5 rad/s2 C) 10 rad/s2 D) 20 rad/s2 E) 40 rad/s2

The diagrams above show the application of a force to a level arm. The arms are of the same length and $\theta$ = 30S1U1P1$\circ$S1S1P0. Which diagram has the largest (magnitude) torque about the hinge?

A) a B) b C) c D) d E) they are the same A) a B) b C) c D) d E) they are the same

A spherically symmetric object with mass m = 0.2 kg and radius r = 10 cm, rolls without slipping on a horizontal surface with speed 1 m/s. It then rolls up an incline that is at an angle 30S1U1P1$\circ$S1S1P0 with the horizon and comes to rest at a distance of 0.6 m along the incline. What is the moment of inertia of the object about an axis through the center of mass?

A) 1.0 $\times$ 10-4 kg · m2/s B) 2.0 $\times$ 10-3 kg · m2/s C) 9.8 $\times$ 10-3 kg · m2/s D) 1.2 $\times$ 10-2 kg · m2/s E) 8.0 $\times$ 10-4 kg · m2/s A) 1.0 $\times$ 10-4 kg · m2/s B) 2.0 $\times$ 10-3 kg · m2/s C) 9.8 $\times$ 10-3 kg · m2/s D) 1.2 $\times$ 10-2 kg · m2/s E) 8.0 $\times$ 10-4 kg · m2/s

Exam 9: Rotation

Use the figure the problem. A mass m = 0.5 kg is hung from a pulley with moment of inertia I = 0.20kg.m² and radius R = 10cm. There is friction in the pulley. The mass is dropped from rest, and after 2s it traveled 4m. -What is the angular acceleration of the pulley?

(Multiple Choice)

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Question 21

A hoop of mass 50 kg rolls without slipping. If the center-of-mass of the hoop has a translational speed of 4.0 m/s, the total kinetic energy of the hoop is

(Multiple Choice)

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Question 22

When an object is moving in a circle at constant speed, its acceleration is

(Multiple Choice)

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Question 23

$The diagrams above show the application of a force to a level arm. The arms are of the same length and \theta = 30<sup> \circ </sup>. Which diagram has the largest (magnitude) torque about the hinge?$ The diagrams above show the application of a force to a level arm. The arms are of the same length and $\theta$ = 30^$\circ$. Which diagram has the largest (magnitude) torque about the hinge?

(Multiple Choice)

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(80)

Question 24

A thin, massless string is wrapped around a 0.25m radius grindstone supported by bearings that produce negligible frictional torque. A steady tension of 20 N in the string causes the grindstone to move from rest to a speed of 60 rad/s in 12s. The moment of inertia of the grindstone is

(Multiple Choice)

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(77)

Question 25

Two solid balls (one large, the other small) and a cylinder roll down a hill. Which has the greatest speed at the bottom and which the least?

(Multiple Choice)

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(77)

Question 26

A wheel rotates through 6.0 rad in 2.0 s as it is uniformly brought to rest. The initial angular velocity of the wheel before braking began was

(Multiple Choice)

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Question 27

Two points, A and B, are on a disk that rotates about an axis. Point A is closer to the axis than point B. Which of the following is not true?

(Multiple Choice)

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Question 28

A bicycle is moving at a speed v = 12.6 m/s. A small stone is stuck to one of the tires. At the instant the stone is at point A in the figure, it comes free. The velocity of the stone (magnitude and direction) relative to Earth just after release is

(Multiple Choice)

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(81)

Question 29

A cylinder (I = ½mR²) rolls along a level floor with a speed v. The work required to stop this cylinder is

(Multiple Choice)

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Question 30

If all of the objects illustrated in the figure have equal masses, the moment of inertia about the indicated axis is largest for the

(Multiple Choice)

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Question 31

In the laboratory, a solid cylinder is permitted to roll down a plane inclined at an angle with the horizontal. If no slipping occurs, which of the following is true?

(Multiple Choice)

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Question 32

The torque exerted on a perfectly spherical orbiting communications satellite by the gravitational pull of the earth is

(Multiple Choice)

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Question 33

A spherically symmetric object with mass m = 0.2 kg and radius r = 10 cm, rolls without slipping on a horizontal surface with speed 1 m/s. It then rolls up an incline that is at an angle 30^$\circ$ with the horizon and comes to rest at a distance of 0.6 m along the incline. What is the moment of inertia of the object about an axis through the center of mass?

(Multiple Choice)

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Question 34

The curve that most nearly represents the acceleration of an object rolling down an inclined plane as a function of the angle of inclination is

(Multiple Choice)

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(85)

Question 35

The moment of inertia of a certain cylinder, whose mass is not distributed uniformly, is 0.6mR² about its geometric axis. The translational speed of the center of mass after it starts from rest and rolls 14 m down a 30º incline is approximately

(Multiple Choice)

4.7/5

(81)

Question 36

For a disc of mass M and radius R that is rolling without slipping, which is greater, its translational or its rotational kinetic energy?

(Multiple Choice)

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(84)

Question 37

You are given two hoops (I = mR²), which are (1) brass and (2) wood, and two cylinders (I = mR²), which are (3) brass and (4) wood; each has radius R. If all are released from the same starting line at the same time, the one(s) that reach the bottom first are

(Multiple Choice)

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(78)

Question 38

Which of the following statements about the motion of the second hand of a clock is true?

(Multiple Choice)

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Question 39

What physical quantity is represented by the slope of the curve shown on the graph?

(Multiple Choice)

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(77)

Question 40

Showing 21 - 40 of 119

Use the figure the problem. A mass m = 0.5 kg is hung from a pulley with moment of inertia I = 0.20kg.m² and radius R = 10cm. There is friction in the pulley. The mass is dropped from rest, and after 2s it traveled 4m. -What is the angular acceleration of the pulley?

A hoop of mass 50 kg rolls without slipping. If the center-of-mass of the hoop has a translational speed of 4.0 m/s, the total kinetic energy of the hoop is

When an object is moving in a circle at constant speed, its acceleration is

A thin, massless string is wrapped around a 0.25m radius grindstone supported by bearings that produce negligible frictional torque. A steady tension of 20 N in the string causes the grindstone to move from rest to a speed of 60 rad/s in 12s. The moment of inertia of the grindstone is

Two solid balls (one large, the other small) and a cylinder roll down a hill. Which has the greatest speed at the bottom and which the least?

A wheel rotates through 6.0 rad in 2.0 s as it is uniformly brought to rest. The initial angular velocity of the wheel before braking began was

Two points, A and B, are on a disk that rotates about an axis. Point A is closer to the axis than point B. Which of the following is not true?

A bicycle is moving at a speed v = 12.6 m/s. A small stone is stuck to one of the tires. At the instant the stone is at point A in the figure, it comes free. The velocity of the stone (magnitude and direction) relative to Earth just after release is

A cylinder (I = ½mR²) rolls along a level floor with a speed v. The work required to stop this cylinder is

If all of the objects illustrated in the figure have equal masses, the moment of inertia about the indicated axis is largest for the

In the laboratory, a solid cylinder is permitted to roll down a plane inclined at an angle with the horizontal. If no slipping occurs, which of the following is true?

The torque exerted on a perfectly spherical orbiting communications satellite by the gravitational pull of the earth is

The curve that most nearly represents the acceleration of an object rolling down an inclined plane as a function of the angle of inclination is

The moment of inertia of a certain cylinder, whose mass is not distributed uniformly, is 0.6mR² about its geometric axis. The translational speed of the center of mass after it starts from rest and rolls 14 m down a 30º incline is approximately

For a disc of mass M and radius R that is rolling without slipping, which is greater, its translational or its rotational kinetic energy?

You are given two hoops (I = mR²), which are (1) brass and (2) wood, and two cylinders (I = mR²), which are (3) brass and (4) wood; each has radius R. If all are released from the same starting line at the same time, the one(s) that reach the bottom first are

Which of the following statements about the motion of the second hand of a clock is true?

What physical quantity is represented by the slope of the curve shown on the graph?

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

Exam 9: Rotation

Use the figure the problem. A mass m = 0.5 kg is hung from a pulley with moment of inertia I = 0.20kg.m2 and radius R = 10cm. There is friction in the pulley. The mass is dropped from rest, and after 2s it traveled 4m. -What is the angular acceleration of the pulley?

A hoop of mass 50 kg rolls without slipping. If the center-of-mass of the hoop has a translational speed of 4.0 m/s, the total kinetic energy of the hoop is

When an object is moving in a circle at constant speed, its acceleration is

The diagrams above show the application of a force to a level arm. The arms are of the same length and θ\thetaθ = 30 ∘\circ∘ . Which diagram has the largest (magnitude) torque about the hinge?

A thin, massless string is wrapped around a 0.25m radius grindstone supported by bearings that produce negligible frictional torque. A steady tension of 20 N in the string causes the grindstone to move from rest to a speed of 60 rad/s in 12s. The moment of inertia of the grindstone is

Two solid balls (one large, the other small) and a cylinder roll down a hill. Which has the greatest speed at the bottom and which the least?

A wheel rotates through 6.0 rad in 2.0 s as it is uniformly brought to rest. The initial angular velocity of the wheel before braking began was

Two points, A and B, are on a disk that rotates about an axis. Point A is closer to the axis than point B. Which of the following is not true?

A bicycle is moving at a speed v = 12.6 m/s. A small stone is stuck to one of the tires. At the instant the stone is at point A in the figure, it comes free. The velocity of the stone (magnitude and direction) relative to Earth just after release is

A cylinder (I = ½mR2) rolls along a level floor with a speed v. The work required to stop this cylinder is

If all of the objects illustrated in the figure have equal masses, the moment of inertia about the indicated axis is largest for the

In the laboratory, a solid cylinder is permitted to roll down a plane inclined at an angle with the horizontal. If no slipping occurs, which of the following is true?

The torque exerted on a perfectly spherical orbiting communications satellite by the gravitational pull of the earth is

The curve that most nearly represents the acceleration of an object rolling down an inclined plane as a function of the angle of inclination is

The moment of inertia of a certain cylinder, whose mass is not distributed uniformly, is 0.6mR2 about its geometric axis. The translational speed of the center of mass after it starts from rest and rolls 14 m down a 30º incline is approximately

For a disc of mass M and radius R that is rolling without slipping, which is greater, its translational or its rotational kinetic energy?

You are given two hoops (I = mR2), which are (1) brass and (2) wood, and two cylinders (I = mR2), which are (3) brass and (4) wood; each has radius R. If all are released from the same starting line at the same time, the one(s) that reach the bottom first are

Which of the following statements about the motion of the second hand of a clock is true?

What physical quantity is represented by the slope of the curve shown on the graph?

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

Filters

Use the figure the problem. A mass m = 0.5 kg is hung from a pulley with moment of inertia I = 0.20kg.m² and radius R = 10cm. There is friction in the pulley. The mass is dropped from rest, and after 2s it traveled 4m. -What is the angular acceleration of the pulley?

A cylinder (I = ½mR²) rolls along a level floor with a speed v. The work required to stop this cylinder is

The moment of inertia of a certain cylinder, whose mass is not distributed uniformly, is 0.6mR² about its geometric axis. The translational speed of the center of mass after it starts from rest and rolls 14 m down a 30º incline is approximately

You are given two hoops (I = mR²), which are (1) brass and (2) wood, and two cylinders (I = mR²), which are (3) brass and (4) wood; each has radius R. If all are released from the same starting line at the same time, the one(s) that reach the bottom first are