Book edition 1st Edition

Author(s) Paul Peter Urone

Pages 1272 pages

ISBN 9781938168000

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Short Answer

Why are the forces exerted on the outside world by the limbs of our bodies usually much smaller than the forces exerted by muscles inside the body?

The limbs in the human body are the third-class lever.

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Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1: Force

A force is an external factor that can change the rest or motion of a body. It has a size and a general direction.

Step 2: Explanation

The mechanical advantage of a machine is,

$M A = \frac{F_{\circ}}{F_{i}} = \frac{l_{i}}{l_{\circ}}$

For, $l_{i} < I_{\circ}$ , $F_{i} > F_{\circ}$ .

The elbow serves as the fulcrum if a load is on the palm. The effort is applied by flexing the biceps. The force exerted by the muscles is the input force, and the force applied by the limbs on the outside world is the output force. As , $l_{i} < I_{\circ}$ the input force is always more significant than the output force. The human limbs are the third-class lever.

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College Physics (Urone)

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Short Answer

Why are the forces exerted on the outside world by the limbs of our bodies usually much smaller than the forces exerted by muscles inside the body?

Step by Step Solution

Step 1: Force

Step 2: Explanation

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College Physics (Urone)

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Short Answer

Why are the forces exerted on the outside world by the limbs of our bodies usually much smaller than the forces exerted by muscles inside the body?

Step by Step Solution

Step 1: Force

Step 2: Explanation

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