A mass of 1 kg is tied to a string as shown in the figure. Find the force exerted on the mass by the Earth ( g = 9 . 8 m s - 2 ).

Given, g = 9 . 8 m s - 2 m = 1 kg where m and g are the mass and acceleration due to gravity. The force acting on the mass by the Earth is F g = m × g F g = 1 kg × 9 . 8 m s - 2 = 9 . 8 N The force acting on the mass by the Earth is 9 . 8 N .

EASY

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Draw a diagram showing the forces that act on a car when it is stationary.

Important Questions on Balanced Forces

HARD

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

The mass of a plant is twice and its radius is three times that of the earth. The weight of a body, which has a mass of $5 k g$ , on that planet will be

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

The weight of a body is

9.8 N

, when

g = 9.8 m s^{- 2}

the mass of the body is

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

Suppose the gravitational attraction of earth suddenly disappear, then

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

A mass of $1 kg$ is tied to a string as shown in the figure.

Question Image

Find the force exerted on the mass by the Earth ( $g = 9.8 m s^{- 2}$ ).

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

Define weight of a body.

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

A person weighs

W

on the surface of the earth. The weight of the person at the centre of the earth will be:

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

Mass and weight have the same units.

MEDIUM

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

What is the weight of a

7 kgwt

body in a planet whose mass is

\frac{1}{7}

of that of earth and radius is

\frac{1}{2}

of the earth?

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

If the mass of a body is

5 kg

, what is its weight?

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

1 kg wt =

MEDIUM

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

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

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

Weight is a scalar quantity.

MEDIUM

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

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.

EASY

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

There are two kinds of balances-beam balance and spring balance. If both the balances give the same measure of a given object on the surface of the earth, will they give the same measure on the surface of the moon? Explain why.

MEDIUM

Physical and Earth Science>Systems>Balanced Forces>Non-contact Forces

A man carrying a load of weight