Question 1

A uniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm.What is its kinetic energy?

Accepted Answer

A) 0.18 J 
B) 0.092 J 
C) 0.96 J 
D) 1.1 J 
E) 17 J 
A) 0.18 J 
B) 0.092 J 
C) 0.96 J 
D) 1.1 J 
E) 17 J

Question 2

What is the kinetic energy of a 120-cm thin uniform rod with a mass of 450 g that is rotating about its center at 3.60 rad/s?

Accepted Answer

A) 0.350 J 
B) 4.20 J 
C) 0.700 J 
D) 0.960 J 
E) 2.10 J 
A) 0.350 J 
B) 4.20 J 
C) 0.700 J 
D) 0.960 J 
E) 2.10 J

Question 3

A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and falls towards the floor,1.1 m below.What is the rotational kinetic energy of the ball just before it hits the floor?

Accepted Answer

A) 0.51 J 
B) 0.73 J 
C) 1.1 J 
D) 2.6 J 
E) This question cannot be answered without knowing the radius of the ball. 
A) 0.51 J 
B) 0.73 J 
C) 1.1 J 
D) 2.6 J 
E) This question cannot be answered without knowing the radius of the ball.

Question 4

An Atwood machine consists of an object of mass of 3.5 kg connected by a light string to an object of mass of 6.0 kg over a frictionless pulley with a moment of inertia of 0.0352 kg ∙ m2 and a radius of 12.5 cm.If the system is released from rest,what is the speed of the objects after they have moved through 1.25 m if the string does not slip on the pulley?

Accepted Answer

A) 2.0 m/s 
B) 2.3 m/s 
C) 4.0 m/s 
D) 5.0 m/s 
E) 6.0 m/s 
A) 2.0 m/s 
B) 2.3 m/s 
C) 4.0 m/s 
D) 5.0 m/s 
E) 6.0 m/s

A uniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm.What is its kinetic energy?

What is the kinetic energy of a 120-cm thin uniform rod with a mass of 450 g that is rotating about its center at 3.60 rad/s?

A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and falls towards the floor,1.1 m below.What is the rotational kinetic energy of the ball just before it hits the floor?

Introduction

Kinematics: Motion in One Dimension

Newtonian Mechanics

Applying Newtons Laws

Circular Motion

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

Gases

Static Fluids

Fluids in Motion

First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge force and Energy

The Electric Field

Dc Circuits

Magnetism

Electromagnetic Induction

Vibrational Motion

Mechanical Waves

Reflection and Refraction

Mirrors and Lenses

Wave Optics

Electromagnetic Waves

Special Relativity

Quantum Optics

Atomic Physics

Nuclear Physics

Particle Physics

Filters

Exam 9: Rotational Motion

A uniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm.What is its kinetic energy?

What is the kinetic energy of a 120-cm thin uniform rod with a mass of 450 g that is rotating about its center at 3.60 rad/s?

A solid uniform ball with a mass of 125 g is rolling without slipping along the horizontal surface of a table with a speed of 4.5 m/s when it rolls off the edge and falls towards the floor,1.1 m below.What is the rotational kinetic energy of the ball just before it hits the floor?

Introduction

Kinematics: Motion in One Dimension

Newtonian Mechanics

Applying Newtons Laws

Circular Motion

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

Gases

Static Fluids

Fluids in Motion

First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge force and Energy

The Electric Field

Dc Circuits

Magnetism

Electromagnetic Induction

Vibrational Motion

Mechanical Waves

Reflection and Refraction

Mirrors and Lenses

Wave Optics

Electromagnetic Waves

Special Relativity

Quantum Optics

Atomic Physics

Nuclear Physics

Particle Physics

Filters