Question

An object with a mass of m = 3.85 kg is suspended at rest between the ceiling and the floor by two thin vertical ropes.
The magnitude of the tension in the lower rope is 12.8 N. Calculate the magnitude of the tension in the upper rope.

Answer 1

The tension in the upper rope is 50.53 N.

Tension in the upper rope

The tension in the upper rope is calculated as follows;

T(up) = T(dn) + mg

where;

• T(dn) is the tension in the lower rope
• mg is the weight of the object

T(up) = 12.8 N + (3.85 x 9.8) N

T(up) = 50.53 N

Thus, the tension in the upper rope is 50.53 N.

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