A man weighing 500 N carries a load of 10 kg to the top of a building in 4 minutes. The work done by the man is 6 Ã đđ4 J. If he carries the same load in 8 minutes, the work done by the man will be:
An engine pumps out 40 kg of water in one second. The water comes out vertically upwards with a velocity of 3ms-1 . What is the power of engine in kilowatt?
Initially, four identical uniform blocks, each of mass m and thickness h, are spread on a table
How much work is done on the blocks in stacking them on top of one another?
A force đ = (đđĖ+ đđŠĖ) newton is applied over a particle which displaces it from its origin to the point đ = (đđĖâ đđŠĖ)
meters. The work done on the particle is:
An engine pumps up 100 kg of water through a height of 10m in 5s. Given that the efficiency of the engine is 60%, what is the power of the engine? (Take g = 10ms-2)