How much is the mass of a man if he has to do 2500 joules of work in climbing a tree 5 m tall ? (`g = 10 m s^(-2)`)

How much is the mass of a man if he has to do 2500 joule of work in climbing a tree 5m tall ? (g = 10 m//s^(2))

A man fell into a manhole of depth 1 m . If his mass is 65 kg , then what should be the work done by him to come out of it (Take g = 10 m s^(-2) ) .

In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m. (a) How much work does he do in lifting one box ? (b) How much energy is transferred when one box is lifted ? (c) If the man lifts 4 boxes per minute, at what power is he working ? ( g = 10 m s^(-2 )

A man works with the constant power 100 W. How much mass of an object can he lift upward at the uniform velocity 1ms^(-1) ? (g=10ms^(-2))

A body of mass 5 kg is taken a height 5 m to 10 m .Find the increase in its potential energy (g=10 m s^(-2) )

What is the work done to fits to lift a body of mass 5 kg to a height of 50 m from the ground (in J)? (g = 10 m s^(-2) )

The mass of a sphereical planet is 5 times the mass of the earth, but its diameter is the same as that of the earth. How much work is done in lifting a stone of mass 3 kg through a distance of 1 m on the planet ? [g on the surface the earth = 10 m//s^(2) ]

How many kilogram weight will a man working at the power of 100 W be able to rise at a constant speed of 1 m/s vertically ? (Given g =10 m//s^(2))