U2 Videos FP 3.2.10

Which forces act on the wooden block when it is being pulled by a string but remains stationary on the table?

• Force of gravity, normal force, force of tension, force of kinetic friction.

• Force of gravity, normal force, force of tension, force of static friction.

• Force of gravity, force of tension, force of static friction.

• Normal force, force of tension, force of static friction.

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When the wooden block is being pulled by a force of tension but remains stationary, what is the relationship between the force of static friction (Fsf) and the force of tension (FT)?

• Fsf > FT

• Fsf < FT

• Fsf = FT

• Fsf is unrelated to FT

On a graph of force of tension versus time, what does the highest point (peak) in the initial phase represent, just before the block begins to move?

• The average kinetic friction.

• The maximum static friction.

• The minimum kinetic friction.

• The force of gravity.

Why does the force of tension required to keep the block moving decrease immediately after the block starts to slide?

• The normal force increases.

• The coefficient of static friction is greater than the coefficient of kinetic friction.

• The mass of the block decreases.

• The force of gravity decreases.