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Calculate the magnitude of the normal force on a 25.2 kg block in the following circumstances....

Calculate the magnitude of the normal force on a 25.2 kg block in the following circumstances. (Enter your answers in N.) HINT (a) The block is resting on a level surface. 246.96 (b) The block is resting on a surface tilted up at a 40.8° angle with respect to the horizontal. 186.94 (c) The block is resting on the floor of an elevator that is accelerating downward at 3.03 m/s2. (d) The block is on a level surface and a force of 165 N is exerted on it at an angle of 40.8° above the horizontal.

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