Question

a. calculate the work done when a load of 100 kg is lifted vertically by 5 m. g= 9.8 m/s2
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Answer 1

Answer:

Work is the product of force and displacement which gives an answer of 4900 J

Explanation:

Given W = F x s, in this case the force will be the effect of gravity on the load hence we will use the weight ( w= mg)

Thus, W = F x s

             = mg x s

             = (100x9.8) x 5

             = 4900 J

Answer 2

FINAL ANSWER:

work done = 4900 J

GIVEN:

m = 100 Kg

h = 5 m

g = 9.8 m/s

TO FIND:

Calculate the work done

FORMULA USED:

Wd = m×h×g

SOLUTION:

Wd = m×h×g

Wd = 100×5×9.8

Wd = 4900 J