Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 6

MEDIUM

9th CBSE

IMPORTANT

Earn 100

A boy weighing $40 kg$ climbs up a tree of height $5 m$ . Calculate the amount of work done ( $g = 9.8 \frac{m}{s^{2}}$ ).

Important Questions on Work and Energy

MEDIUM

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 7

Calculate the work done by a man holding a suitcase weighing

5 kg

in his hand.

EASY

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 8

A force of

500 N

moves a body through a distance of

100 cm

. Calculate the work done by the force.

MEDIUM

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 9

Calculate the work done if a force of

1000 N

causes a displacement of

45 m

such that the force makes an angle of

60 °

with the displacement.

MEDIUM

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 10

A man does a work of

5 kJ

in lifting a

20 kg

bucket from ground floor to the top floor of the building. Calculate the height of the building. Take

g = 9.8 m / s^{2}

.

EASY

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 1

What is energy?

EASY

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 2

State and define SI unit of energy.

EASY

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 3

Name the energy source which is not due to sun.

EASY

9th CBSE

IMPORTANT

Secondary Physics>Chapter 5 - Work and Energy>TEST YOURSELF>Q 4

Define kinetic energy.