Frictional Force CP

Suppose you have a 120-kg wooden crate resting on a wood floor (μs = 0.5, μk = 0.3). You push the crate to the right.

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Draw a free body diagram for the crate.

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What maximum force can you exert horizontally on the crate without moving it?

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If you continue to exert this force once the crate starts to slip, what will its acceleration then be?

A block whose weight is 45.0 N rests on a horizontal table. A horizontal force of 36.0 N is applied to the block. The coefficients of static and kinetic friction are 0.650 and 0.420, respectively. 

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Draw a free body diagram for the block.

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Will the block move under the influence of the force, and, if so, what will be the block's acceleration?

An 81-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is 0.49.

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Draw a free body diagram of the baseball player

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What is the magnitude of the frictional force?

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If the player comes to rest after 1.6 s, what was his initial velocity?

A cup of hot chocolate is sitting on the dashboard of a car that is traveling at a constant velocity. The coefficient of static friction between the cup and the dashboard is 0.30. Suddenly, the car accelerates.

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Draw the free body diagram of the coffee cup

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Suppose you have a 120-kg wooden crate resting on a wood floor (μs = 0.5, μk = 0.3). You push the crate to the right.

Draw a free body diagram for the crate.

What maximum force can you exert horizontally on the crate without moving it?

If you continue to exert this force once the crate starts to slip, what will its acceleration then be?

A block whose weight is 45.0 N rests on a horizontal table. A horizontal force of 36.0 N is applied to the block. The coefficients of static and kinetic friction are 0.650 and 0.420, respectively.

Draw a free body diagram for the block.

Will the block move under the influence of the force, and, if so, what will be the block's acceleration?

An 81-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is 0.49.

Draw a free body diagram of the baseball player

What is the magnitude of the frictional force?

If the player comes to rest after 1.6 s, what was his initial velocity?

A cup of hot chocolate is sitting on the dashboard of a car that is traveling at a constant velocity. The coefficient of static friction between the cup and the dashboard is 0.30. Suddenly, the car accelerates.

Draw the free body diagram of the coffee cup

What is the maximum acceleration that the car can have without the cup sliding backward off the dashboard?