Question

calculate the amount of work done in lifting a body of mass 10 kg vertically upward to the height of 20 m
guys a very quick answer and fully explained plz ​

Answer 1

Mass of the body, m = 100kg. Height, h = 20m. Acceleration due to gravity, g = 10m/s. (i) Work done, w = mgh. = 100 × 10× 20 = 20,000 J. (ii) Potential energy, PE = Work done (At any point above the surface of the ground, the work done in raising the body is numerically equal to the potential energy)