Question

A square block wieghtining 30n rests on the ground, the coefficient of friction between the block and the ground is 0.6. The force required to pull the block horizontally is

Answer 1

Weight of the block = 30 N

Normal force from the ground = Weight of the block = 30 N

Coefficient of friction = 0.6

To make the block move, we need to overcome force of friction.

Formula for force of friction = μ × Normal force

Force of friction = 0.6 × 30

Force of friction = 18 N

Hence, to make the block move, we need a minimum force of 18 N.

Answer 2

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