EASY

Earn 100

A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g =10 m/s²)______.

50% studentsanswered this correctly

Important Questions on Work, Energy and Power

MEDIUM

Science>Physics>Work, Energy and Power>Work

Derive a relationship between SI and CGS units of work.

EASY

Science>Physics>Work, Energy and Power>Work

Heat and work done by the heat was discovered by

EASY

Science>Physics>Work, Energy and Power>Work

Spring constant of a spring is

K = 6 \times 10^{3} N / m

. Work done to stretch it

10^{- 2} m

from mean position is

MEDIUM

Science>Physics>Work, Energy and Power>Work

A body is displaced by 10 m when maximum work of 200 joules is done on it. Calculate the force acting on this body.

HARD

Science>Physics>Work, Energy and Power>Work

A force is applied upon a body of 40 kg then its velocity increases from 1
metre/second to 2 metre/second. Determine work done by the force.

HARD

Science>Physics>Work, Energy and Power>Work

An object of 40 kg mass is moving with 5 m/s velocity. Now force is applied on the object such that its velocity increases to 10 m/s. Calculate the work done by the force.

EASY

Science>Physics>Work, Energy and Power>Work

A force of

40 N

acts on a body, and body moves through a distance of

2

metre at an angle of

45 °

in the direction of the force. The work done by the force is

EASY

Science>Physics>Work, Energy and Power>Work

Convert 1 kilowatt-hour into joules.

HARD

Science>Physics>Work, Energy and Power>Work

A pump on the ground floor of a building can pump up water to fill the tank of

30 m^{3}

15

min. If the tank is

40 m

above the ground, and the efficiency of the pump is

30 %,

the power consumed by the pump is

(g = 10 m / s^{2})

EASY

Science>Physics>Work, Energy and Power>Work

160 joule

of work is done when a force of

20 N

is applied on an object. Calculate the distance through which the object moves and state its direction.

EASY

Science>Physics>Work, Energy and Power>Work

The amount

1 J

is equivalent to

EASY

Science>Physics>Work, Energy and Power>Work

A magnetic crane lifts a mass of

1000 kg

through a height of

50 m

. Calculate the work done by the crane. (Take

g = 10 \frac{m}{s^{2}}

)

EASY

Science>Physics>Work, Energy and Power>Work

What is the SI unit of work?

EASY

Science>Physics>Work, Energy and Power>Work

What should be the angle between force and displacement, such that we obtain negative work?

EASY

Science>Physics>Work, Energy and Power>Work

A person of mass

50 kg

climbs a tower of height

72 m

. Calculate the work done. (take

g = 10 \frac{m}{s^{2}}

EASY

Science>Physics>Work, Energy and Power>Work

What is the amount of work done on a body of mass

10 g

moving in a circular path of radius

5 cm

EASY

Science>Physics>Work, Energy and Power>Work

When is the work done by a force on a body said to be positive? Give two examples.

EASY

Science>Physics>Work, Energy and Power>Work

When does a force perform work ?

MEDIUM

Science>Physics>Work, Energy and Power>Work

What should be the angle between force and displacement to get maximum work?

EASY

Science>Physics>Work, Energy and Power>Work

When the force applied on a body is increased, the work done on it

A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g =10 m/s2)______.

Important Questions on Work, Energy and Power

Learn and Prepare for any exam you want !

A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g =10 m/s²)______.