Hi Everyone I need help for a physics problem: A stick of mass F is lying on a f
ID: 2124449 • Letter: H
Question
Hi Everyone
I need help for a physics problem:
A stick of mass F is lying on a frictionless surface. A small ball of mass G and velocity v collides with the stick in the center of the stick a right angle to the rod. The collision is elastic.
a) Where is the axis of rotation for the rod after the collision?
b) What is the angular velocity around the axis of rotation after this collision?
c) What is the velocity of the center of mass of the rod after the collision?
We should probably look at some parallel axis theorem - am I right?
Thanks for your help!
Explanation / Answer
a)There is no axis of rotation since the rod does not rotate.
b)The angular velocity is zero
c)the velocity of the center of mass of the rod:
V =u1(m1-m2) + m2u2/(m1+m2) = G*v/(G+F)