Advertisements
Advertisements
प्रश्न
What happens to the force between two objects, if the masses of both objects are doubled?
Advertisements
उत्तर
If the masses of both the objects are doubled, then
F''' = `(G xx (2m_1) xx (2m_2))/R^2`
= `(4Gm_1m_2)/R^2`
= 4F
Thus, the gravitational force between the two objects becomes 4 times.
APPEARS IN
संबंधित प्रश्न
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.
Let V and E be the gravitational potential and gravitational field at a distance r from the centre of a uniform spherical shell. Consider the following two statements :
(A) The plot of V against r is discontinuous.
(B) The plot of E against r is discontinuous.
Derive an expression for the gravitational field due to a uniform rod of length L and mass M at a point on its perpendicular bisector at a distance d from the centre.
A ball is thrown vertically upwards. It goes to a height 20 m and then returns to the ground. Taking acceleration due to gravity g to be 10 ms-2 , find :
the total time of journey of the ball .
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
Solve the following problem.
Calculate the acceleration due to gravity at a height of 300 km from the surface of the Earth. (M = 5.98 × 1024 kg, R = 6400 km).
State the universal law of gravitation and derive its mathematical expression.
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?
The Superposition Principle states that the net gravitational force on an object is:
