Friction Problems WS #2 Short
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1.
A horizontal force of 400.0 N is needed to pull a 1760 N trunk across
the floor at constant speed. What is the coefficient of kinetic friction
(µk)?
2.
What force must be exceeded to start a 1.35 kg book moving across a
desk if the coefficient of static friction (µs) is 0.30?
3.
A 1500. N force is exerted on a 200.0 kg crate to move it across the
floor. If µk is 0.250, what is the acceleration of the crate?
4.
A 146 N force is needed to pull a 350. N block across a horizontal
surface at constant speed by a rope making an angle of 50.00 with the
floor. Find the coefficient of friction (µk).
5.
What force is needed to push a 60.0 kg crate up a 40.00 incline at
constant speed if µk is 0.500?
6.
A 3.00 kg wood box slides from rest down a 35.00 inclined plane.
What is the acceleration of the box if µk is 0.30?
7.
What force is required to accelerate a 65.0 kg crate up a 25.00 incline
at a rate of 7.00 m/s2 if the coefficient of kinetic friction (µk) is 0.200?
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8.
If the coefficient of friction between a set of skis and the snow is 0.10,
at what angle will a 90.0 kg skier move at a constant speed down the
slope?