Suppose that the body travels a height h before it starts it journey downwards and let the radius of the Earth be R. We shall solve the problem using conservation of energy.At the instant when a body starts to move upwards, it total energy is the sum of its kinetic energy and its gravitational potential energy and is given by
. When the body reaches its highest point, its has no kinetic energy and its potential energy is given by
. So we have,
Now if the acceleration of at the surface due to gravity is g, then we have,
1 comment:
many many thanks for this solution . I was waiting when the next solution will be published. I also wait eagerly for the next.
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