Question

An object of mass 5 kg is attached to the hook of a spring balance and the balance is suspended vertically from the roof of a lift. The reading on the spring balance, when the lift is going up with an acceleration of 0.25 ms⁻² (g= 10m/s⁻²)

Assertion-We know novice player tries to catch the cricket ball almost instantly and this hurts him. Reason-Force not only depends on the change in momentum but also on how fast the change in momentum is brought about.

A monkey seems to climbs up and another monkey seems to move down at same rope hanging over a pulley with same uniforms acceleration. If the respective masses of monkeys are in the ratio 1:3. Find the common acceleration?

The tension in the string shown in figure