Combine the concepts of conservation of energy and conservation of momentum in i
ID: 1385208 • Letter: C
Question
Combine the concepts of conservation of energy and conservation of momentum in inelastic collisions.
PROBLEM The ballistic pendulum is a device used to measure the speed of a fast-moving projectile such as a bullet. The bullet is fired into a large block of wood suspended from some light wires. The bullet is stopped by the block, and the entire system swings up to a height h.
Because the impact is inelastic, it would be incorrect to equate the initial kinetic energy of the incoming bullet to the final gravitational potential energy associated with the bullet
Explanation / Answer
1)thermal energy loss due to air drag
2) emission of sound waves
4)friction in the mechanisms
due to air resistance rhe bullet will heat up and there will be thermal losses.
on striking the wood there will emmissions of sound wave,definitely some energy of the bullet will be used in this process
finally there will be friction in the mechanism , which will try to resist the swinging of the wood,option 3 would have been correct if it was with respect to the block ,
energy loss from height is accomadated in the gain in potential energy already.