What is the acceleration due to gravity at a height of R 5 from the surface of the earth?

The acceleration due to gravity at height h from the earth surface is, g h = g R R + h 2 where g is the acceleration due to gravity on the surface and R is the radius of the earth. g h = g R R + R 5 2 = g 5 R 6 R 2 = g 25 36 = 25 36 × 9 .8 = 6 .8 m/s 2

E M B I B E

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 6

MEDIUM

9th CBSE

IMPORTANT

Earn 100

A player throws a ball vertically upward. The ball attains a height of $25 m$ and then returns back. Find the initial speed of the ball.

Important Questions on Gravitation

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 7

A boy on a cliff

49 m

high drops a stone. One second later he throws another stone. Both the stone hit the ground at the same time. With what speed is the second stone thrown?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 8

What is the acceleration due to gravity at a height of

\frac{R}{5}

from the surface of the earth?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 9

A man throws a ball vertically with a velocity of

20 m s^{- 1}

. After what time will the ball come back to his hands? (Take

g = 10 m / s^{2}

)

EASY

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 10

Mass of an object is

10 kg

. What is its weight?

EASY

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 11

An object weighs

10 N

when measured on the surface of the earth. What would be its weight when measured on the surface of the moon?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Summative Assessment>Q 12

The mass of a body is

50 kg

on the surface of the earth. Find its weight on the surface of the planet whose mass is double than the mass of the earth and radius is five times the radius of the earth.

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Competition File>Q 1

Two objects of different masses falling freely near the surface of moon would

EASY

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 3 - Gravitation>Competition File>Q 2

The value of acceleration due to gravity