Advertisements
Advertisements
Question
The law of gravitation gives the gravitational force between :
Options
the earth and a point mass only
the earth and the sun only
any two bodies having some mass
any two charged bodies only
Advertisements
Solution
any two bodies having the same mass .
APPEARS IN
RELATED QUESTIONS
How will you ‘weigh the sun’, that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 × 108 km.
Can you think of two particles which do not exert gravitational force on each other?
Let V and E represent the gravitational potential and field at a distance r from the centre of a uniform solid sphere. Consider the two statements:
(A) the plot of V against r is discontinuous.
(B) The plot of E against r is discontinuous.
A uniform metal sphere of radius a and mass M is surrounded by a thin uniform spherical shell of equal mass and radius 4a (In the following figure). The centre of the shell falls on the surface of the inner sphere. Find the gravitational field at the points P1 and P2 shown in the figure.

Explain the following:
People often shake the branches of a tree for getting down its fruits.
What does a force do in the following case?
You twist a piece of rubber.
What does a force do in the following case?
You catch a kicked ball.
Give the applications of universal law gravitation.
Newton's universal law of gravitation applies to ______.
If three equal masses m are placed at the three vertices of an equilateral triangle of side 1/m then what force acts on a particle of mass 2m placed at the centroid?
