Advertisements
Advertisements
Question
The force of attraction between any two material objects is called __________.
Advertisements
Solution
The force of attraction between any two material objects is called FORCE OF GRAVITATION.
APPEARS IN
RELATED QUESTIONS
Choose the correct alternative:
Acceleration due to gravity is independent of mass of the earth/mass of the body.
State Kepler’s law which is represented by the relation r3 ∝ T2.
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
Four particles of equal masses M move along a circle of radius R under the action of their mutual gravitational attraction. Find the speed of each particle.
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.
How will the force of gravitation between two objects change if the distance between them is:
Halved
State Newton's universal law of gravitation. Express it with the mathematical form of force of gravitation?
For the weight of body of mass 5 kg to be zero on equator of the earth, angular velocity of the earth must be (The radius of earth = 6400 km, acceleration due to gravity = 10 m/s2).
If the law of gravitation, instead of being inverse-square law, becomes an inverse-cube law- ______.
- planets will not have elliptic orbits.
- circular orbits of planets is not possible.
- projectile motion of a stone thrown by hand on the surface of the earth will be approximately parabolic.
- there will be no gravitational force inside a spherical shell of uniform density.
Give scientific reasons for the following:
Newton's gravitational law is the universal law of gravitation.
