Question

Q.7. (a) Write the formula to find the magnitude of gravitational force between the earth and an object
on the earths surface.
(b) Derive how does the value of gravitational force 'F' change between two objects when the :
1) distance between them is reduced to half, and
m) mass of one object is increased four time. ​

Answer 1

Answer:

Q.7.

A )

• A Let the mass of earth = M.
• Let the mass of earth = M.Let the mass of the object = m.
• Let the mass of earth = M.Let the mass of the object = m.Distance between the the earth's centre and object = Radius of the earth = R.
• Therefore,
• Therefore,Gravitational Force = F = GMm/ R 2

B )

• How does the force of gravitation between two objects change when the distance between them is reduced to half? Therefore when the distance between the objects is reduced to half, then the force of gravitation increases by four times the original force.

1)

• Therefore when the distance between the objects is reduced to half, then the force of gravitation increases by four times the original force. Gravitational force acts on all objects in proportion to their masses.

Explanation:

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