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3 years ago

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When you apply a horizontal force of 76 N to a block, the block moves across the floor at a constant speed ().When you apply a f

orce of 89 N, what is the magnitude of the horizontal component of the force that the floor exerts on the block?

1 answer:

elena-s [515]3 years ago

3 0

Answer:

Explanation:

When we apply a horizontal force of 76 N to a block, the block moves across the floor at a constant speed. So net force on the block is zero .

It implies that a force ( frictional ) acts on it which is equal to 76 N in opposite direction ( friction )

When we apply a greater force on it it starts moving with acceleration .

This time kinetic friction acts on it due to rough ground equal to 76 N .This is limiting friction ( maximum friction )

Net force on the body in later case

= 89 - 76

= 13 N

Force by ground on the block in horizontal direction = 76 N ( FRICTIONAL FORCE )

=

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