If 784 J of work was done in lifting a 20 kg mass, calculate the height through which it was lifted. (g = 9.8 m/s2)
Mass of a body = 20kg
Acceleration due to gravity (g) = 9.8m/s2
Work done = 784 J
As we know,
W = m x g x h
h = W/m x g
h = 784/ 20 x 9.8
h = 784/196
h = 4m
Therefore, the height through which the body was lifted is 4m