The 1.0 kg block in the figure is tied to the wall with a rope. It sits on top o

Question

The 1.0 kg block in the figure is tied to the wall with a rope. It sits on top of the 2.0 kg block. The lower block is pulled to the right with a tension force of 20 N. The coefficient of kinetic friction at both the lower and upper surfaces of the 2.0 kg block is ?k = 0.350.

What is the acceleration of the 2.0 kg block? Express your answer with the appropriate units.

Two packages at UPS start sliding down the 20? ramp shown in the figure. Package A has a mass of 6.00kg and a coefficient of kinetic friction of 0.220. Package B has a mass of 8.00kg and a coefficient of kinetic friction of 0.130.

How long does it take package A to reach the bottom? Express your answer with the appropriate units.

Explanation / Answer

1.)

a) Ff1 =

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