Work Energy And Power Question 277
Question: Mass $ m_1 $ strikes m which is at rest. The ratio of masses for which they will collide again (collision between ball and wall are elastic, coefficient of restitution between $ {m_1} and m_2 $ is e and all the surfaces are smooth.)
Options:
A) $ <\frac{e}{2+e} $
B) $ >\frac{2e}{2+e} $
C) $ \ge \frac{e}{2( 2+e )} $
D) None of the above
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ {m_1}v=-m_1v_1+m_2v_2 $
$ e=\frac{2v_1}{v} $ for limiting condition $ \frac{m_1}{m_2}<\frac{e}{2+e} $
