Question

A boy pushes a book by applying force of 5 N find the work done by this force as the book is displaced through 20cm while pushing

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Answer 1

100 Ncm or 1 Nm

How to do:

Given:

Displacement (d): 20cm

Force (F): 5N

Want:

Work: ???

Equation:

W = Fd

Solve:

W = Fd

W = 5N x 20 cm

W = 100 Ncm

If you want it in meters (standard unit), just do unit conversions:

1 cm = 1 m/100 cm

20cm x 1 m/100 cm = 20/100 = 0.2m

W = 5N x 0.2m = 1 Nm