What is the ratio of momentum @ M and N? (No friction)

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1 Answer
Ananda Dasgupta
May 8, 2018

Assuming that the object was at rest at point K, the answer is 2:3

Explanation:

According to the work energy theorem,

  • Kinetic energy at M #= 4F x#
  • that at N #=9 F x#

The ratio of kinetic energies is 4:9

Since KE #propto p^2#, we have

  • momentum at M : that at N = 2:3
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