the block in the figure below has a mass of 5.0 kg and it rests on an incline of
ID: 1534764 • Letter: T
Question
the block in the figure below has a mass of 5.0 kg and it rests on an incline of angle theta. You pull on the rope with a force F = 34 N, Assume the incline is smooth and determine the angle of the incline if You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 256N in the negative x direction to try and move the 53kg refrigerator. The coefficient of static friction is 0.61 How much static frictional force does the floor exert on the refrigerator? Give both magnitude and direction. What maximum force do you need to apply before the refrigerator starts to move?Explanation / Answer
1)The required force to pull is given by:
F = mg sin(theta)
theta = sin -1 (F/mg)
theta = sin -1 (34/5 x 9.8) = 45.6 deg
hence, theta = 45.6 deg
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