piece of putty urgent help

Question

A piece of putty of mass m = 0.75 kg moves at a velocity of v = 2.5 m/s along a horizontal frictionless surface. It hits and sticks to the bottom of a rod of mass M = 2 kg and length L = 0.9 m which is held by a frictionless nail at the opposite end of the rod

a) Find the frequency of the subsequent oscillations.

b) If the putty had hit and stuck to the rod at a higher point, would the rod-putty system oscillate faster or slower?

Answer 1

Look up the physics for the motion of a simple pendulum. There is a relation ship between the dimensions of the pendulum and the period of oscillation. Use that.