Question

The figure shows a planet in an elliptical orbit around the sun S. At which position of the planet will its kinetic energy be maximum?

• A. $P_1$
• B. $P_2$
• C. $P_3$
• D. $P_4$

Answer 1

The correct option is A $P_1$

The kinetic energy of the planet is given by $E_k=\frac{GMm}{2r}$ [r=distance between the sun and the planet]

So, at point $P_1$. 'r' is minimum,i.e,$E_k$ will be maximum.