A 20 kg mass was lifted 3.0 m from the ground. What is the work being done on the mass?

W=588,6J

Explanation:

Work done is defined as change in potential energy in this question. The work is done against the gravity, g=9,81N/kg, and for a mass of 20kg to lift it up to 3m approximately 588,6 joules. This result is obtained as follows;

W=m.g.h

Then substitute the given values

W= (20kg).(9,81N/kg).(3.0m)

Multiplying results

  = 588,6J

600joules

Explanation:

mass=20kg

g=10m/s^2

height=3m

Work=mass x g x height

Work=20 x 10 x 3

Work=600joules