A box weighing 82.0 N rests on a table. A rope tied to the box runs vertically u

ID: 1874835 • Letter: A

Question

A box weighing 82.0 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end.

A) Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs 30.0 N.

B) Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs 60.0 N.

C) Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs 90.0 N.

Force = (82 - 30) = 52N., upwards.

Force = (82 - 60) = 22N., upwards.

Force = 0. The box has moved upwards clear of the table.

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