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igor_vitrenko [27]
3 years ago
8

If you apply 100.0 N of force to lift an object with a single, fixed pulley, then what is the resistive force?

Physics
1 answer:
quester [9]3 years ago
6 0
<span>If you apply 100.0 N of force to lift an object with a single, fixed pulley, then the resistive force is also equivalent to 100 Newtons of force. Since the weight of the object was not mentioned, it is assumed that it has already been taken into account in the 100 N value of force. This follows Newton's law of motion of equal action and reaction.</span>
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The bowling ball is at rest, so it only has gravitational potential energy.

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3 years ago
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A key falls from a bridge that is 32 m above the water. It falls directly into a model boat, moving with constant velocity, that
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Answer:

Speed of the boat, v = 4.31 m/s

Explanation:

Given that,

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The model boat is 11 m from the point of impact when the key was released, d = 11 m

Firstly, we will find the time needed for the boat to get in this position using second equation of motion as :

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t=\sqrt{\dfrac{2\times 32}{9.8}}

t = 2.55 seconds

Let v is the speed of the boat. It can be calculated as :

v=\dfrac{d}{t}

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v = 4.31 m/s

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3 0
3 years ago
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3 years ago
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Answer:

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