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Ann [662]
3 years ago
11

What is needed for work to be done?

Physics
1 answer:
nlexa [21]3 years ago
8 0

Answer:

a force must be act on an object while an equal force acts oppositely on the object.

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The magnetic force on a current-carrying wire due to a magnetic field is given by
F=ILB
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The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.
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<h3>What is mechanical advantage ?</h3>

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of the given mechanical machine.

The efficiency to open the stubborn bolt depends upon the contact between the working surface of the pliers and the bolt.

The contact between the bolt and the top pair of pliers working surface is less. Its mechanical advantage is less.

Hence, the top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.

To learn more about the mechanical advantage, refer to the link;

brainly.com/question/7638820

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