Determine the work that needs to be done when lifting a body weighing 6 kg to the 3rd floor

Determine the work that needs to be done when lifting a body weighing 6 kg to the 3rd floor, the height of the floor is 3 m.

m = 6 kg.

g = 10 m / s ^ 2.

n = 3.

h1 = 3 m.

A -?

The work of force A, when lifting the body, is determined by the formula: A = F * h, where F is the force under which I lift the load, h is the height of the load.

The force F with which the load is lifted, according to Newton’s 3 law, is equal to the force of gravity m * g: F = m * g.

The height of lifting the load h is found by the formula: h = n * h1, where n is the number of floors, h1 is the height of one floor.

The formula for determining the work will take the form: A = m * g * n * h1.

A = 6 kg * 10 m / s ^ 2 * 3 * 3 m = 529.2 J.

Answer: when lifting the body, work is done A = 540 J.