A 20-Kg Mass Is Connected to a 5

A 2.0-kg mass is connected to a 5.0-kg mass by a massless rod 32 cm long,as shown in the figure.A hole is then drilled in the rod 11 cm away from the 2.0-kg mass and the rod and masses are free to rotate about this pivot point P.What is the angular frequency of rotational oscillations for the masses if they are displaced slightly from equilibrium?

A) 5.3 rad/s
B) 3.53 rad/s
C) 2.9 rad/s
D) 5.8 rad/s
E) 1.4 rad/s

Correct Answer:

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