If an engine supplies `100J` of energy to weight of `200gram`. how high it can be lifted ? (given `g = 9.8m//s^(2))`

What is the weight of a 1 kilogram mass on the earth? (g = 9 .8 m//s^2).

A coolie lifts a box of 15 kg from the ground to a height of 2.0 m. The work done by the coolie on the box is (Given g = 9.8 m//s^(2) )

A crane lifts a mass of 100 kg to a height of 10 m in 20 s. The power of the crane is (Take g = 10 m s^(-2) )

An object of 100 kg is lifted to a height of 10 m vertically. What will be the work done ? [g = 9.8 m//s^(2)]

The work done in pulling a load of 100 kg 4900 J. What is te height in metres to which it is pulled ? [g = 9.8 m//s^(2)]

The weight of a body is 50 N. What is its mass? (g = 9 .8 m//s^2)

A ball is thrown up with a speed of 15 m/s . How high wiil it go before it begins to fall ? (g=9.8 m//s^(2)

Write down the weight of a 50 kg mass on the earth. (g = 9 .8 m//s^2)

A heat engine of efficiency 40% takes 10kJ of heat energy every second. It is used to lift a weight of 2000kg. Find the height to which the weight can be raised in 30s. [Take g= 10ms^(-2) ]