The work done in lifting 1 kg mass to a height of 9.8 m is about
A man lifts a mass of 20 kg to a height of 2.5 m. Assuming that the force of gravity on 1 kg mass is 10 N, Find the work done by the man.(take g = 10 ms−2)
Calculate the work done by a man to lift a luggage of 10 kg from the ground to a height of 1.7 m above the ground. Take (g=9.8 m/s2)
200 J of work was done against gravity to lift an object of mass 1 kg to a particular height. If the body is dropped from that height, what will be its velocity when it reaches the bottom?