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A block of mass m = 100 kg is on an inclined plane as shown where ∅ = 20 degrees and θ = 40 degrees. The coefficient of static friction is μs = 0.35 and coefficient of kinetic friction is μk = 0.3 . Determine the friction force, F, acting on the block when force P with a magnitude of 200 N is applied to the block, which remains in equilibrium. Determine the magnitude of the force, P, required to initiate motion of the block up the slope from rest. Determine the magnitude of the friction force F acting on the block if P = 900 N.

A block of mass m = 100 kg is on an inclined plane as shown where ∅ = 20 degrees and θ = 40 degrees. The coefficient of static friction is μs = 0.35 and coefficient of kinetic friction is μk = 0.3 . Determine the friction force, F, acting on the block when force P with a magnitude of 200 N is applied to the block, which remains in equilibrium. Determine the magnitude of the force, P, required to initiate motion of the block up the slope from rest. Determine the magnitude of the friction force F acting on the block if P = 900 N.

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A block of mass m = 100 k g is on an inclined plane as shown where ∅ = 20 degrees and θ = 40 degrees. The coefficient of static friction is μ s = 0.35 and coefficient of kinetic friction is μ k = 0.3 .
  1. Determine the friction force, F , acting on the block when force P with a magnitude of 200 N is applied to the block, which remains in equilibrium.
  2. Determine the magnitude of the force, P , required to initiate motion of the block up the slope from rest.
  3. Determine the magnitude of the friction force F acting on the block if P = 900 N .

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Two blocks are connected by a massless string over a pulley, as shown at right. Block A has a mass of 20 kg, and Block B has mass m. The coefficient of static friction between Block A and the horizontal surface is μs = 0.30 and the coefficient of kinetic friction between Block A and the surface is μk = 0.20. The mass m of block B can be selected to be any value between 0 kg and 40 kg. The value of m is chosen, and the system is released from rest. This is repeated for many different values of m. 6) On the axes provided, graph the friction force Ff acting on block A vs. the mass m of block B. Note the value of important points on the graph such as discontinuities, maxima, and minima. Show your work.
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