- #1

Raghav Gupta

- 1,011

- 76

## Homework Statement

Assume that the orbital radius of the Earth decreases from R to R-ΔR due to air drag, provided the change is very small compared to the radius of earth.

Then what is change in orbital velocity, change in kinetic energy, change in potential energy and work done by air resistance?

## Homework Equations

F = Gm1m2/r

^{2}

Kinetic energy = 1/2 mv

^{2}

Potential energy = mgh

## The Attempt at a Solution

Work done by air resistance is Gm1m2Δr/r

^{2}?