Question
Tue March 13, 2012 By: Pri

how much work is needed to be done on a ball of mass 50 grams to give a momentum of 500 gcm/s

Expert Reply
Wed March 14, 2012
velocity = 500/50 = 10 cm/sec
u=0
W = Force * distance
Force = m . a
acceleration = v-u/t = 10/1 = 10 cm/sec2
force = 50 * 10 = 500 gm cm/sec2
Work done = F . Distance = 500 * 1 = 500 gm cm2 /sec2
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