Gravitation Tes...

The value of g is _____ at poles

The value of g on the moon is $$\dfrac {1}{6}th$$ that on the earth. A body weighing $$60\ N$$ on the earth weighs ________ on the moon.

According to Newton's law of gravitation, the apple and the earth experience equal and opposite forces due to gravitation. But it is the apple that falls towards the earth and not vice-versa. Why?

Suppose gravitational force between two masses were to be given by $$F = k\dfrac {\sqrt {m_{1}m_{2}}}{d^{3}}$$ where k is some constant, two equal masses attract each other with a certain force when the distance is d. If each of the masses is doubled, than what value the distance between them must be maintained for the force to remain the same as earlier?

A body weighs $$5\ N$$ in air and $$2\ N$$ when immersed in a liquid. The buoyant force is

If the diameter of earth becomes two times its present value and its mass remains unchanged then how would the weight of an object on the surface of the earth be affected?

A rectangular tank of $$6\ m$$ long, $$2\ m$$ broad, and $$2\ m$$ deep is full of water. find the thrust acting on the bottom of the tank. (Density of water, $$\rho_w=1000\ kg/m^3$$)

The maximum vertical distance through which a full dressed astronaut can jump on the earth is 0.5 m. Estimate the maximum vertical distance through which he can jump on the moon, which has a mean density 2/3 rd that of the earth and radius one quarter that of the earth.

The value of universal gravitational constant $$G$$ is-

S.I. Unit of universal gravitational constant $$G$$ is-