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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > In the figure shown initially spring is in relaxed state and blocks are at rest. Now 100 N force is applied on block A and become 2 m/s and that of B 4 m/s and block A displaced by amount 10 cm towards left and spring is streached by amount 30 cm. Then work done by spring force on A is Wo joule. Find Wo in J

In the figure shown initially spring is in relaxed state and blocks are at rest. Now 100 N force is applied on block A and become 2 m/s and that of B 4 m/s and block A displaced by amount 10 cm towards left and spring is streached by amount 30 cm. Then work done by spring force on A is Wo joule. Find Wo in J

A railway flat car moves at a speed V. The gun barrel makes an angle α = 60∘ with the horizontal. A shell of mass m leaves the barrel at a speed v = 12 m/s relative to the barrel. Find the speed of the flat car V (in m/s) in order that it may stop after the firing. whose mass together with the artillery gun is M = 2 m