P-1 Gravitation Science - P-1 Gravitation

What will be the weight of a person on the earth, who weighs 9N on the moon?

How much will a person with 72 N weight on the earth, weigh on the moon?

The SI unit of the universal constant of gravitation is ……

In the usual notation, the acceleration due to gravity at a height h from the surface of the earth is ……..

If area ESF in figure 1.5 is equal to area ASB, what will you infer about EF?

Will your weight remain constant as you go above the surface of the earth?

What will be the value of g at the centre of the earth?

Will the direction of the gravitational force change as we go inside the earth?

What would happen if the value of G was twice as large?

With a specific initial velocity, we can jump higher on the moon than on the earth.

The weight of a body is different on different planets

If a feather and a stone are released from the top of a building simultaneously, the stone reaches the ground earlier than the feather.

The gravitational force due to the earth also acts on the moon because of which it revolves around the earth. Similar situation exists for the artificial satellites orbiting the earth. The moon and the artificial satellites orbit the earth. The earth attracts them towards itself but unlike the falling apple, they do not fall on the earth, why?

According to Newton’s law of gravitation, every object attracts every other object.
Thus, if the earth attracts an apple towards itself, the apple also attracts the earth towards itself with the same force. Why then does the apple fall towards the earth, but the earth does not move towards the apple?

According to Newton’s law of gravitation, the earth’s gravitational force is higher on an object of larger mass. Why doesn’t that object fall down with higher velocity as compared to an object with lower mass?

Suppose you are standing on a tall ladder. If your distance from the centre of the earth is 2R, what will be your weight?

If the value of g suddenly becomes twice its value, it will become two times more difficult to pull a heavy object along the floor. Why?<

A stone thrown vertically upwards with initial velocity u reaches a height ‘h ’before coming down. Show that the time taken to go up is same as the time taken to come down.

what are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force?

What is the difference between mass and weight of an object? Will the mass and weight of an object on the earth be the same as their values on Mars? Why?

What are Newton’s laws of motion?

Explain why the value of g is zero at the centre of the earth

Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?

Using the law of conservation of energy, obtain the expression for the escape velocity

From Newton’s law of gravitation, derive the formula for the acceleration due to gravity