Question

A block of wood of maa 9.8kg is suspended by a string .A bullet of mass 200gm strikes horizontally with a velocity of 100 m/s and gets imbedded init .The maximum height attained by the block is

Answer 1

first conserve momentum just at that instant and then use energy conservation

Answer 2

Answer:0.2m

Explanation:mu+Mu'=(M+m)v

m=mass of block

M=mass of bullet

u=initial velocity of block

u'=initial velocity of bullet

v=final velocity of system

9.8(0)+0.2(100)=(9.8+0.2)v

v=2

h=v^2/2g