Advertisements
Advertisements
प्रश्न
Which of the Kepler’s laws of planetary motion led Newton to establish the inverse-square rule for gravitational force between two bodies ?
Advertisements
उत्तर
The third law of Kepler’s planetary motion (i.e. The law of harmonies) led Newton to establish the inverse – square rule for gravitational force between two bodies.
APPEARS IN
संबंधित प्रश्न
If the moon attracts the earth, why does the earth not move towards the moon?
The gravitational intensity at the centre of a hemispherical shell of uniform mass density has the direction indicated by the arrow (see Fig 8.12) (i) a, (ii) b, (iii) c, (iv) 0.

Can you think of two particles which do not exert gravitational force on each other?
A tunnel is dug along a chord of the earth at a perpendicular distance R/2 from the earth's centre. The wall of the tunnel may be assumed to be frictionless. Find the force exerted by the wall on a particle of mass m when it is at a distance x from the centre of the tunnel.
A thin spherical shell having uniform density is cut in two parts by a plane and kept separated as shown in the following figure. The point A is the centre of the plane section of the first part and B is the centre of the plane section of the second part. Show that the gravitational field at A due to the first part is equal in magnitude to the gravitational field at B due to the second part.

Explain the following:
People often shake the branches of a tree for getting down its fruits.
A ball is thrown up with a speed of 4.9 ms-1.
Prove that the time of ascent is equal to the time of descent.
Two equal and opposite forces acting at the same point on a stationary body. Will the body move? Give reason to explain your answer.
Give scientific reasons for the following:
Newton's gravitational law is the universal law of gravitation.
The acceleration of the Moon towards the Earth is approximately:
