Three Blocks, Light Connecting Ropes, and a Light Frictionless Pulley

question 16

Short Answer

Three blocks, light connecting ropes, and a light frictionless pulley comprise a system, as
shown in the figure. An external force of magnitude P is applied downward on block A,
causing block A to accelerate downward at a constant 2.5 m/s². The tension in the rope
connecting block B and block C is equal to 60 N.
(a) What is the magnitude of the force P?
(b) What is the mass of block C?

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