Question

1. The ball is thrown up, the value of ‘g’ will be [1]
a. Zero b. Positive c. negative d. Negligible
2. (a) Why can one jump higher on the surface of the moon than on the earth? [2]
(b) An apple falls from a tree because of the gravitational attraction between the earth and the
apple. If F1 is the magnitude of the force exerted by the earth on the apple and F2 is the
magnitude of the force exerted by the apple on the earth, then
(a) F1 is very much greater than F2 (b) F2 is very much greater than F1
(c) F1 and F2 are equal (d) F1 is only a little greater than F2
3. i) State Universal Law of Gravitation [2]
ii) Let M and m be the masses of the two objects separated by distance d is shown above.
Let F be the Gravitational Force between them. Mention any two ways by which
Gravitational Force (F) between A and B can be increased to four times (4F)

Answer 1

Answer =

this question Answers is zero

Answer 2

Answer:

1)ans is c

2)as the gravitational force of moon is 1/6th that of the earth , so the force acting on the body pulling our body downwards is lowered so we can jumb high on moon

b)ans is a

3)every object in the universe attracts every other object with an equal and opposite force this force is directly proportional to the product of the masses and inversely proportional to square of distance between them

3,2)decrease the distance between them to half

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