Question

In the figure shown, two forces, F and 20 N are
applied on the block. The magnitude of force F such
that the block moves left with a net force of 4 Nis
(Stationary)
F
20 N
Block
Smooth horizontal surface
20 N
24 N
C 10 N
16 N​

Answer 1

Answer:

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Answer 2

Answer:

The magnitude of the force is d) 16N.

Explanation:

There are two forces acting on the block, i.e., one from the left and the other from the right.

The magnitude of the force acting from the right side is given as 20N.

We have to find the unknown force F acting from the left side such that the block moves towards the left with a net force of 4N.

If the force F acting from the left side is 16N, then the net force will be 4N towards the left. Hence, the block will move to the left.

Explanation for incorrect options:

a)20 N

If the force F acting from the left side is 20N, the two forces will cancel each other. Hence, the block will remain stationary.

b)24 N

If the force F acting from the left side is greater than 20N, i.e., 24N, the net force will be 4N towards the right. Hence, the block will move to the right.

c)10 N

If the force F acting from the left side is 10N, then the net force will be 10N towards the right.

Therefore, the magnitude of force F such that the block moves left with a net force of 4N is 16N.

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