Question

59000 j of work is done by a machine to lift a mass of 100g vertically upwards. calculate the work done by the force​

Answer 1

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Explanation:

TO FIND:

THE VERTICAL HEIGHT TO WHICH MASS OF 100kg is lifted

GIVEN:

Work done=5900j

Mass=100kg

We know on taking a particle to a certain height 'h' the potential energy gets stored in it.

Thus the stored potential energy [P] in it is

P=mgh

Where,

m=mass

g=acceleration due to gravity

h=height to which it is taken

So the work done is equal to the potential energy stored

W=P=mgh

5900=100*9.8*h

5900=980h

h=5900/980

h=590/98

h=6.02

Thus, it moves till the height of 6.02m vertically upward