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प्रश्न
The earth and the moon are attracted to each other by gravitational force. Does the earth attract the moon with a force that is greater or smaller or the same as the force with which the moon attracts the earth? Why?
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उत्तर
- According to the universal law of gravitation, two objects attract each other with equal force but in opposite directions.
- The earth attracts the moon with an equal force with which the moon attracts the earth.
संबंधित प्रश्न
A rocket is fired from the earth towards the sun. At what distance from the earth’s centre is the gravitational force on the rocket zero? Mass of the sun = 2 ×1030 kg, mass of the earth = 6 × 1024 kg. Neglect the effect of other planets etc. (orbital radius = 1.5 × 1011 m).
State two applications of universal law of gravitation.
Two spherical balls of mass 10 kg each are placed 10 cm apart. Find the gravitational force of attraction between them.
What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
Why does a ball moving on a table top eventually stops?
Is there a gravitational attraction between you and the book? Explain.
The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is ______ of the distance between them.
Complete the chart below.
| F(N) | M1(kg) | M2(kg) | D(m) |
| (a) | 50 | 84 | 02 |
| 16 × 109 | 1.63 × 1022 | (b) | 34 |
Answer the following questions in reference to the figure below:
- Which relation is shown in the figure?
- What will happen if the mass of one of the objects is doubled?
Observe the figure and answer the questions:
- State Newton's universal law of gravitation.
- If the distance between the two bodies is tripled, how will the gravitational force between them change?
- What will happen to gravitational force, if mass of one of the object is doubled?
