How much work is done when a body of mass m is raised to a height h above the ground ?

Q. Glen has raised a dumbbell of mass 5 kg to a height of 10 m above the ground. Calculate the work done by Glen? (Take $g=10m{s}^{-2}$)

Q. What will be the work done by the gravity when a body of mass m is raised to height h?

Q. A barbell of mass 5 kg is raised to a height of 3 m above the ground. Calculate the work done by the boy. Take acceleration due to gravity $g=10m{s}^{-}2.$

Q. How much work is done on lifting a body of 1 kg upto the distance of 1 m above the ground or vertically?