Advertisements
Advertisements
प्रश्न
Two spherical balls of mass 10 kg each are placed 10 cm apart. Find the gravitational force of attraction between them.
Advertisements
उत्तर
The gravitational force of attraction between the balls is given as by
\[F = \frac{G m_1 m_2}{r^2}\]
\[\text { Given } : m_1 = m_2 = 10 kg \text { and } r = 10 cm = 0 . 10 m\]
\[\therefore F = \frac{6 . 67 \times {10}^{- 11} \times 10 \times 10}{\left( 0 . 1 \right)^2}\]
\[ \Rightarrow F = 6 . 67 \times {10}^{- 7} N\]
APPEARS IN
संबंधित प्रश्न
Write the formula to find the magnitude of the gravitational force between the earth and an object on the surface of the earth.
What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 × 1024 kg and radius of the earth is 6.4 × 106 m).
What is the importance of the universal law of gravitation?
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
Choose the correct answer from among the given ones:
For the problem 8.10, the direction of the gravitational intensity at an arbitrary point P is indicated by the arrow (i) d, (ii) e, (iii) f, (iv) g.
Three uniform spheres each having a mass M and radius a are kept in such a way that each touches the other two. Find the magnitude of the gravitational force on any of the spheres due to the other two.
Write an expression for the gravitational force of attraction between two bodies of masses m1 and m2 separated by a distance r.
Where will you weigh more: at the moon's surface or at the earth's surface?
What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
What does a force do in the following case?
You pull the skin of your arm
What does a force do in the following case?
You apply brakes to a running car.
What is the difference between gravity and gravitation?
State Newton's law of gravitation. What is the difference between:
Gravity and gravitation
An apple falls towards the earth due to its gravitational force. The apple also attracts the earth with the same force. Why do we not see the earth rising towards the apple? Explain.
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).
The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph where r is the distance of the point from the centre of the hollow spherical shell of uniform density.
Newton's universal law of gravitation applies to ______.
The Superposition Principle states that the net gravitational force on an object is ______.
Who measured the value of the Universal Gravitational Constant G using the Cavendish balance?
