Question

Fill in the blanks and explain the statements with reasoning:
a. If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will ...... .
b. The initial velocity (during launching) of the Managalyaan, must be greater than ..............of the earth.

Answer 1

a. If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will decrease.
Explanation: This can be easily inferred from the formula of critical or tangential velocity.
$v_{\mathrm{c}}=\sqrt{\frac{GM}{R+h}}$

b. The initial velocity (during launching) of the Managalyaan, must be greater than escape velocity of the earth.