Question

Answer the following
1.State the significance of universal law of gravitation.
2. What is difference between gravity and gravitation?
3.What do you mean by acceleration due to gravity?
4.Why does the weight of a body vary from poles to equator?
5.What will be the weight of an object on the earth whose mass is 10 kg ? (g= 10 m/ s2)
6. A ball is dropped from a tower of height 5m. With what velocity does it strike the ground? ( g= 10 m/s2)
7.Differentiate between (a) 'G' and 'g' (b) mass and weight.
8.A heavy object falls with same acceleration light object during free fall. Why?
9.An object is thrown up with a velocity of 20 m/ s .Find (a) the maximum height attended by it. (b) the total time taken by it to return back.( g= 10 m/s2).
10.A sheet of paper falls slower than when it is crumpled into a ball. Why?​

Answer 1

Answer:

Heya user ,

Here is your answer !!

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Mass of a substance is the amount of matter contained in a body .

☆ Its S.I. unit is kg .

☆ It remains constant .

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Weight is the force with which a body is pulled to the centre of the earth .

☆ Its S.I. is N ( newton ) .

☆ It changes from place to place .

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Mass of a body on Mars will numerically be equal to what it was when it was on Earth since the matter contained by that body cannot change .

But weight will vary depending on the gravitational force exerted on the body

Explanation: