Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 2

HARD

10th Maharashtra Board

IMPORTANT

Earn 100

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.

Important Questions on Gravitation

MEDIUM

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 2

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?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 3

Explain why the value of

g

is zero at the centre of the earth.

MEDIUM

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 4

Let the period of revolution of a planet at a distance

R

from a star be

T

. Prove that if it was at a distance of

2 R

from the star, its period of revolution will be

\sqrt{8} T

.

HARD

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 5

An object takes

5 s

to reach the ground from a height of

5 m

on a planet. What is the value of

g

on the planet?

HARD

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 5

The radius of planet A is half the radius of planet B. If the mass of A is

M_{A}

, what must be the mass of B so that the value of

g

on B is half that of its value on A?

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 5

The mass and weight of an object on earth are

5 kg

and

49 N

respectively. What will be their values on the moon? Assume that the acceleration due to gravity on the moon is

{\frac{1}{6}}^{th}

of that on the earth.

MEDIUM

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 5

An object thrown vertically upwards reaches a height of

500 m

. What was its initial velocity? How long will the object take to come back to the earth? Assume

g = 10 m s^{- 2}

.

EASY

10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 1 - Gravitation>Exercise>Q 5

A ball falls off a table and reaches the ground in

1 s

. Assuming

g = 10 m s^{- 2}

, calculate its speed on reaching the ground and the height of the table.