Question

Examples
Example 6.1: A person pulls a suitcase through the airport at 45° angle. The
tension in the rope is 20 N. How much work does the tension do if the suitcase is
pulled 100m?
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Answer 1

Answer:

How much work does the tension do, if the suitcase is pulled 100 m? circular path. How much work does the frictional force do on the car? Zero!

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Explanation:

Answer 2

Answer:

1410 J

Explanation:

Given, T = F = 20 N, d = 100 m and θ = 45°

We know work done = F.d.cos θ

                                   = 20 x 100 x cos 45° = 20 x 100 x 1/√2

                                   = √2 x 10 x 100 = 1.41 x 1000 = 1410 J

Hope this helps!