Identify in each case whether work done in each case is negative, positive or zero by givingappropriate reason in support of your answer (in notebook)-(i) Work done by the gravitational force of earth acting on a satellite moving around it in acircular path
Question
Identify in each case whether work done in each case is negative, positive or zero by givingappropriate reason in support of your answer (in notebook)-(i) Work done by the gravitational force of earth acting on a satellite moving around it in acircular path
Solution
In this case, the work done by the gravitational force of the earth acting on a satellite moving around it in a circular path is zero.
The reason for this is that work is defined as the product of the force applied and the displacement of the object in the direction of the force. In this scenario, the gravitational force is always perpendicular to the displacement of the satellite.
Since the dot product of two perpendicular vectors is zero, the work done by the gravitational force is zero. Therefore, the work done in this case is zero.
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