Question

Pilgrims are going from New Delhi to Vaishno Devi. Some go by helicopter, some
prefer trekking and the rest go by stairs. Finally they reach at the same height from the
sea level. Is the work done by gravity in all the cases same or different? Explain.
(Assume that mass of all pilgrims are same)​

Answer 1

Answer: The work done by gravity in all the cases will be same . As the potential energy at the final destination will be mgh ( m is the mass of pilgrim , g is acceleration due to gravity , and h is height of the place ).

Explanation: The work done by gravity is path independent as it depends only on final and initial position .So thus mgh (work done by gravity) will be same in all the cases as mass of pilgrims (m ) , acceleration due to gravity ( g ) and height (h) are same thus the work done in all the cases will be same.

Answer 2

Explanation:

I hope it will helps you