The mass of a planet and its diameter are three times those of earth's. Then the acceleration due to gravity on the surface of the planet is ....... $m/s^2$
$3.3$
$4.9$
$19.6$
$29.4$
A simple pendulum doing small oscillations at a place $\mathrm{R}$ height above earth surface has time period of $T_1=4 \mathrm{~s}$. $T_2$ would be it's time period if it is brought to a point which is at a height $2 R$ from earth surface. Choose the correct relation $[R=$ radius of Earth]:
Weight of a body is maximum at
A body weight $500 \,N$ on the surface of the earth. How much would it weigh half way below the surface of the earth ....... $N$
As we go from the equator to the poles, the value of $g$
$Assertion$ : The length of the day is slowly increasing.
$Reason$ : The dominant effect causing a slowdown in the rotation of the earth is the gravitational pull of other planets in the solar system.