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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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<h3>Hi there !</h3><h2>Option A is correct </h2>

<h3> Please refer the attachment for explanation</h3><h2>Stay safe, stay healthy and blessed</h2><h2>Have a marvelous day</h2><h2>Thank you</h2>

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2 years ago
Diferencie energia cinética de energia potencial gravitacional.
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Answer:

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The atoms and molecules in it are in constant motion. The kinetic energy of such a body is the measure of its temperature. Potential energy is classified depending on the applicable restoring force. Gravitational potential energy – potential energy of an object which is associated with gravitational force

4 0
3 years ago
A wave seen at the ocean’s shore is which kind of wave?
Lostsunrise [7]
B. Transverse Wave this is the correct answer
3 0
3 years ago
Read 2 more answers
How to calculate the slope of position time graph?
Mashcka [7]

Answer:

The slope of a position-time graph can be calculated as:

m=\frac{\Delta y}{\Delta x}

where

\Delta y is the increment in the y-variable

\Delta x is the increment in the x-variable

We can verify that the slope of this graph is actually equal to the velocity. In fact:

\Delta y corresponds to the change in position, so it is the displacement, \Delta s

\Delta x corresponds to the change in time \Delta t, so the time interval

Therefore the slope of the graph is equal to

m=\frac{\Delta s}{\Delta t}

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3 0
3 years ago
A rubber ball that sits motionless near the edge of a tall bookshelf has no kinetic energy. However, it does have mechanical
klio [65]

It is possible because the rubber ball has mechanical energy which is equal to potential energy.

<h3>What is mechanical energy?</h3>

Mechanical energy of an object is the total energy possessed by the object, including the potential energy and the kinetic energy.

M.A = K.E + P.E

<h3>What is kinetic energy?</h3>

Kinetic energy is the energy possessed by an object due to its motion.

<h3>What is potential energy?</h3>

Potential energy is the energy possessed by an object due to its position.

When kinetic energy (K.E) = 0

M.A = P.E

Thus, it is possible because the rubber ball has mechanical energy which is equal to potential energy.

Learn more about mechanical energy here: brainly.com/question/24443465

8 0
3 years ago
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