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OleMash [197]
3 years ago
10

A block whose weight is 45.8 N rests on a horizontal table. A horizontal force of 36.6 N is applied to the block. The coefficien

ts of static and kinetic friction are 0.697 and 0.371, respectively. Will the block move under the influence of the force, and, if so, what will be the block's acceleration? If the block does not move, give 0 m/s2 as the acceleration?
Physics
1 answer:
Liula [17]3 years ago
7 0

Answer:

Yes it will move and a= 4.19m/s^2

Explanation:

In order for the box to move it needs to overcome the maximum static friction force

Max Static Friction = μFn(normal force)

plug in givens

Max Static friction = 31.9226

Since 36.6>31.9226, the box will move

Mass= Wieght/g which is 45.8/9.8= 4.67kg

Fnet = Fapp-Fk

= 36.6-16.9918

=19.6082

=ma

Solve for a=4.19m/s^2

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Explanation:

Let us assume that forces acting at point B are as follows.

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Hence, formula for allowable normal stress of cable is as follows.

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From equation (1),   F_{AB}Sin (60^{o})  = -3925

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From equation (2),    -12877.29 (Cos 60) + W = 0

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                           W = 6438.64 kip

Thus, we can conclude that greatest weight of the crate is 6438.64 kip.

5 0
2 years ago
What is the function of the commutator in a motor?
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The answer you are looking for is: 
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Answer:

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What wavelength of light (in nm) is associated with a frequency of 8.01E15 Hz?
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I use same accuracy to speed of light as it's for frequency.

Frequency f= 8.01·10^15 1/s

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