Questions
A plate of mass M remains in equilibrium in air when n bullets are fired per second on it. The mass of each bullet is m and it strikes the plate with speed v' If the coefficient of restitution is e, then (M>>m)
detailed solution
Correct option is A
see fig. (4) the change in momentum of Bullet = m v e - (-m v) = m v (1+e)given that n bullets strike per second '. Force exerted by the bullets =n[mv(1+e)] upwards Now n[mv(1+e)]=Mg (∵F=Mg downwards ) so, M=nmv(1+e)gTalk to our academic expert!
Similar Questions
A steel ball is released from a height of 27 m onto a fixed horizontal steel plate. On bouncing the ball rises to a height of 3 m. Then co-efficient of restitution is
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
