Physics

A 5.1–kg block is pulled along a frictionless floor by a cord that exerts a force P = 12 N at an angle θ = 25° above the horizontal, as shown below. (a) What is the acceleration of the
block? (b) The force P is slowly increased. What is the value of P just before the block is lifted off the floor? (c) Determine the acceleration of the block just before it is lifted off the floor?

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