Mean solar day is the time interval between two successive noon when the sun passes through the zenith point (meridian). The sidereal day is the time interval between two successive transit of a distant star through the zenith point (meridian).

In drawing appropriate diagram showing earth's spin and orbital motion, show that the mean solar day is four minutes longer than the sidereal day. In other words, distant stars would rise 4 minutes early every successive day.

Show the nature of the following graph for a satellite orbiting the earth.

(a) $K.E.$ versus orbital radius $R$

 Plot the nature of the following graph for a satellite orbiting the earth :

 $P.E$ versus orbital radius $R$

 Explain with reason, whether the shown curve can be a possible trajectory traced by a projectile (neglect air friction).

Explain with reason, whether the shown curve can be a possible trajectory traced by a projectile (neglect air friction).

 Explain with reason, whether the shown curve can be a possible trajectory traced by a projectile (neglect air friction).

Explain with reason, whether the shown curve can be a possible trajectory traced by a projectile (neglect air friction).