Physics Past Questions and Answers

An object is moving with a velocity of 5m<sup style='font-size: smaller;'>-1</sup>. At what height must a similar body be situated to have a potential energy equal in value with kinetic energy of the moving body?

If a pump is capable of lifting 5000kg of water through a vertical height of 60m in 15 min, the power of the pump is

The coefficient of friction between two perfectly smooth surface is

What effort will a machine of efficiency 90% apply to lift a load of 180N if its efforts arm is twice as long as its load arm?

Calculate the work done when a force of 20N stretches a spring by 50mm.