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Ksivusya [100]
3 years ago
10

A 5kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N opposing the motion. Draw a fo

rce diagram and determine the net force. Then calculate the acceleration of the object.

Physics
1 answer:
Taya2010 [7]3 years ago
3 0

Answer:

Net force on the block is 32 N.

Acceleration of the object is 6.4 m/s².

Explanation:

Let the acceleration of the object be a m/s².

Given:

Mass of the block is, m=5\ kg

Force of pull is, F=40\ N

Frictional force on the block is, f=8\ N

The free body diagram of the object is shown below.

From the figure, the net force in the forward direction is given as:

F_{net}=F-f=40-8=32\ N

Now, from Newton's second law of motion, net force is equal to the product of mass and acceleration. So,

F_{net}=ma\\32=5a\\a=\frac{32}{5}=6.4\ m/s^2

Therefore, the acceleration of the object in the forward direction is 6.4 m/s².

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The vertical motion = Dy = -1.3 m (negative sign indicates that the cat is falling)
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From the laws of motion:
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<span>Therefore the cat's speed when it slid off the table is 4.23 m/s horizontally.</span>



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