Slanting Surfaces With Friction: The figure shows a block of mass m resting on a 20° slope. The block has coefficients of friction ?s = 0.64 and ?k = 0.54 with the surface of the slope. It is connected using a very light string over an ideal pulley to a hanging block of mass 2.0 kg. The string above the slope pulls parallel to the surface. What is the minimum mass m so the system will remain at rest when it is released from rest?
A. 2.1 kg
B. 3.3 kg
C. 1.3 kg
D. 3.6 kg
Answer: A
Physics & Space Science
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