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sleet_krkn [62]
3 years ago
5

You need to move a 132 kg sofa to a different location in the room. It takes a force

Physics
1 answer:
nataly862011 [7]3 years ago
6 0

Let <em>w</em> denote the weight of the sofa, <em>n</em> the magnitude of the normal force, and <em>f</em> the magnitude of the friction force. The sofa is in equilibrium, so by Newton's second law,

<em>n</em> - <em>w</em> = 0

125 N - <em>f</em> = 0

The sofa has a weight of

<em>w</em> = (132 kg) <em>g</em> = 1293.6 N

where <em>g</em> = 9.80 m/s² is the magnitude of the acceleration due to gravity. Since <em>n</em> = <em>w</em>, the normal force has the same magnitude.

The friction force is proportional to the normal force by a factor of the coefficient of static friction <em>µ</em>, such that

<em>f</em> = <em>µ</em> <em>n</em>

Our second equation tells us <em>f</em> = 125 N, so solve for <em>µ</em> :

125 N = <em>µ</em> (1293.6 N)

<em>µ</em> ≈ 0.0966

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Finding spring constant given displacement of spring and distance traveled by a cart
Alborosie
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If a satellite weighs 321 lb. on the earth's surface (R = 4,000 miles), how much does it weigh 12,000 miles above the surface? (
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The gravitational force between the Earth and the satellite (its "weight") is inversely proportional to the distance between the centers of both objects.

On the surface, their centers are separated by 1 Earth radius.

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3 0
3 years ago
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Shtirlitz [24]

Answer:

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6 0
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Answer:

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Explanation:

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Tension

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6 0
2 years ago
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