Aball on a string travels once around a circle with a circumference of 2.0 m. the tension in the string is 5.0 n. how much work is done by tension?

0

Explanation:

Given

circumference of circle is 2 m

Tension in the string

In this case Force applied i.e. Tension is Perpendicular to the Displacement therefore angle between Tension and displacement is

The work done by the ball as it travels once around the circular string is 0.

The given parameters;

The work-done by a body is the dot product of applied force and displacement.

For one complete rotation around the circumference of the circle, the displacement of the object is zero.

The work-done by the ball when its  makes a complete rotation around the circle is calculated as;

Work-done = F x r

where;

Work-done = 5 x 0 = 0

Thus, the work done by the ball as it travels once around the circular string is 0.

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