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Physics - Force and Motion

1. A 3200-lb elevator cab is supported by a cable in which the maximum safe tension is 4000 lb.
(a) What is the greatest upward acceleration the elevator cab can have?
(b) The greatest downward acceleration?

2. A box is sliding down a frictionless plane inclined at an angle of 30° with the horizontal. What is the acceleration of the box?

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(1) Mass of the cab = Weight/g = 3200/32 = 100 slugs

(a) The maximum net upward force the cable can ...

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Neat, step-by-step soltuion is provided.