A 5.0 kg crate is resting on a horizontal plank. The coefficient of static friction is...
A 5.0 kg crate is resting on a horizontal plank. The coefficient of static friction is 0.50 and the coefficient of kinetic friction is 0.40. One end of the plank is raised so the plank makes an angle of 30° with the horizontal. Find the minimum force that can be applied parallel to the plane to hold the crate at rest.
a. 4.49N
b. 0
c. 2.29N
d. 3.29N
e. 5.59N
Homework Answers
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A 5.0 kg crate is resting on a horizontal plank. The coefficient
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A horizontal force pushes on a 50 kg crate resting on the floor. Once the crate is moving, kinetic friction acts on it. The coefficient of kinetic friction is 0.40. Determine the acceleration of the crate (in m/s) if the applied force is 200 newtons,
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Figure 5 shows a crate has a mass of 50 kg and the coefficient of static friction between the crate and the plane is us = 0.25. (1) Determine the minimum horizontal force P required to hold the crate from sliding down the plane. (8 marks) Determine the minimum force P required to push the crate up the plane. (8 marks) (11) P 30° Figure Q5
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A horizontal force pushes on a 50 kg crate resting on the floor. Once the crate is moving, kinetic friction acts on it. The coefficient of kinetic friction is 0.40. Determine the acceleration of the crate (in m/s) if the applied force is 200 newtons,
Figure 5 shows a crate has a mass of 50 kg and the coefficient of static friction between the crate and the plane is us = 0.25. (1) Determine the minimum horizontal force P required to hold the crate from sliding down the plane. (8 marks) Determine the minimum force P required to push the crate up the plane. (8 marks) (11) P 30° Figure Q5
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