A pump lifts 373 kg of water to a height of 10m in 98s. Find the power of the pump. Express it in horsepower.

A box of mass 10 kg is lifted through a height of 10 m in 49 s. Find the corresponding power.

5. A dam on Vaitama river stores about 60000 kg of water at a height of 80 m. Calculate the amount of potential energy stored in the water.

Calculate the power of pump lifting 100 kg of water and storing it in a water tank of height 9 m in 1 minute.

Solve the following examples: A man carrying a box of mass 20 kg climbs up to a height of 1m in 40s. Calculate the power delivered by him to the box.

A body of mass 5 kg is lifted through a height of 20 m. Calculate the work done by the applied force.

A capillary tube of diameter 0.6 mm dipped vertically into water. It rises to height of 6 cm in capillary tube, find the surface tension of water. (Given: density of water = 1000 kg//m^3, g = 9.8 m//s^2 ).

A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1m is 1000 time . Assume that the potential energy lost each time be lower the mass is dissipated . How much far will be use up considering the work done only when the weight is lifted up ? Far supplies 3.8 xx 10^(7) J of energy per kg wich is canverted to mechanical energy with x 20 % efficiency rate Take = 9.8 ms^(-2)

A ball is dropped from a height of 10m. It bounces to a height of 6m, then 3.6m and so on. Find the total distance travelled by the ball.

Water is filled in a cylindrical container to a height of 3m . The ratio of the cross-sectional area of the orifice and the beaker is 0.1 . The square of the speed of the liquid coming out from the orifice is (g=10m//s^(2)) .

A cylindrical tank having cross-sectional area A is filled with water to a height of 2.0 m. A circular hole of corss-section area is opened at a height of 75 cm from the bottom. If a//A=sqrt(0.2, then velocity with which waer emerges from the hole is (g =9.8 ms^(-2))