Physics

Problem

During two equal time intervals of

30\,\text{days}

, a planet sweeps equal small areas near points P and Q of its elliptical orbit. Its distances from the Sun are

0.5\,\text{AU}

at P and

1.0\,\text{AU}

at Q. If

s_P

and

s_Q

are the arc lengths travelled in these intervals, which relation is correct? a)

s_P=s_Q

s_P>s_Q

s_P<s_Q

s_P=\dfrac12\,s_Q