A crate of mass 58 kg is attached to one end of a string, and the other end of t

Question

A crate of mass 58 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in the figure below. If the person pulls with a force of 87 N, what is the crate's acceleration? (Assume that upward is the positive direction. Indicate the direction with the sign of your answer.)

A crate of mass 58 kg is attached to one end of a string, and the other end of the string runs over a pulley and is held by a person as in the figure below. If the person pulls with a force of 87 N, what is the crate's acceleration? (Assume that upward is the positive direction. Indicate the direction with the sign of your answer.)

Explanation / Answer

t-87=ma........(1)

t-58*9.8=58*a

t=58(9.8+a)

-87+58(9.8+a)=(87/9.8)*a

49.1224a=-481.4

a=-09.8

i have taken upward as positive.

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