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The swimmer shown in Figure 7.44 exerts an average

Chapter 7, Problem 56

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QUESTION:

The swimmer shown in Figure \(7.44\) exerts an average horizontal backward force of \(80.0 \mathrm{~N}\) with his arm during each \(1.80 \mathrm{~m}\) long stroke.

(a) What is his work output in each stroke?

(b) Calculate the power output of his arms if he does \(120\) strokes per minute.

        

Figure \(7.44\)

Equation Transcription:

Text Transcription:

7.44

80.0 N

1.80 m

120

Questions & Answers

QUESTION:

The swimmer shown in Figure \(7.44\) exerts an average horizontal backward force of \(80.0 \mathrm{~N}\) with his arm during each \(1.80 \mathrm{~m}\) long stroke.

(a) What is his work output in each stroke?

(b) Calculate the power output of his arms if he does \(120\) strokes per minute.

        

Figure \(7.44\)

Equation Transcription:

Text Transcription:

7.44

80.0 N

1.80 m

120

ANSWER:

Solution 56PE

Step 1 of Step 3

A swimmer is swimming in the pool, hence we have to find the work done in each of his strokes.

Given the force is 80N and the displacement is 1.80m.

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