The gravitational force between two point masses m1 and m2 at separation r is given by F-k m1 m2-r2 The constant kA- Depends on system of units onlyB- Depends on medium between masses onlyC- Depends on both a and bD- Is independent of both a and b

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Byju's Answer

Standard XII

Physics

Newton's Law of Gravitation

The gravitati...

Question

The gravitational force between two point masses $m_{1}$ and $m_{2}$ at separation r is given by $F = k \frac{m_{1} m_{2}}{r^{2}}$ The constant k

Depends on system of units only

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Depends on medium between masses only

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Depends on both (a) and (b)

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Is independent of both (a) and (b)

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Solution

The correct option is A
Depends on system of units only

k represents Universal gravitational constant which depends only on the system of units.

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Similar questions

Q. Gravitational force between two objects having masses

m_{1}

and

m_{2}

is given by

F = G \frac{m_{1} . m_{2}}{r^{2}} N

, where

G

is constant . Choose the incorrect option.

Q. Question 8
The value of quantity G in the law of gravitation

(a) depends on mass of earth only
(b) depends on radius of earth only
(c) depends on both mass and radius of earth
(d) is independent of mass and radius of the earth

Assertion :

The centres of two cubes of masses

m_{1}

and

m_{2}

are separated by a distance

r

. The gravitational force between these two cubes will be

\frac{G m_{1} m_{2}}{r^{2}}

Reason :

According to Newton's law of gravitation, gravitational force between two point masses

m_{1}

and

m_{2}

separated by a distance

r

\frac{G m_{1} m_{2}}{r^{2}}

The value of quantity G in the formula for gravitational force :
(a) depends on mass of the earth only
(b) depends on the radius of earth only
(c) depends on both mass and radius of earth
(d) depends neither on mass nor on radius of earth

Q. Find the dimensions of G in the equation

F = \frac{G m_{1} m_{2}}{r^{2}}

; where F is the force of gravitational attraction between two bodies of point masses

m_{1}

and

m_{2}

, 'r' is the distance of separation between them.

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The gravitational force between two point masses m1 and m2 at separation r is given by F=km1m2r2 The constant k

The correct option is A Depends on system of units only k represents Universal gravitational constant which depends only on the system of units.

The gravitational force between two point masses $m_{1}$ and $m_{2}$ at separation r is given by $F = k \frac{m_{1} m_{2}}{r^{2}}$ The constant k

The correct option is A
Depends on system of units only

k represents Universal gravitational constant which depends only on the system of units.