S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 19

MEDIUM

10th ICSE

IMPORTANT

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The figure shows wheel of radius $5 cm$ that can rotate freely about the point $O$ . It is in equilibrium due to forces $F_{1}$ and $F_{2}$ acting on it. Which one of $F_{1}$ and $F_{2}$ is greater force? What is the ratio of the two forces? Given $O O ’ = 3 cm .$

Important Questions on Force

HARD

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 20

A uniform metre scale rests on a knife edge at

60 cm

mark. The scale becomes horizontal when a mass of

12 g

is suspended from one end at scale. Which end of scale is this? What is the mass of scale?
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HARD

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 21

The figure shows a heavy wheel of mass

w

that can rotate freely about the axis passing through point

O

. The wheel is to be raised on the pavement

A B

by applying a minimum force. Show the direction of application of force and calculate its magnitude.
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MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 22

The figure shows a bar

A B

pointed in the middle at point

O

. Two forces

15 N

each act on this bar at ends

A

and

B

in opposite direction. What is magnitude of resultant moment of forces about

O

?

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MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 23

Three equal forces P. Q and R act in a plane but in different directions. The point O also lies in the same plane. Which force has the least moment about O? Which force has the largest moment about O? Give reasons to your answer.
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MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 24

A uniform metre scale balances horizontally at

44 cm

mark when a weight of

20 g

is placed at

15 cm

mark. What is weight of metre scale? Draw a diagram of arrangement.

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 25

Draw a neat labelled diagram to show the direction of two force

F_{1}

and

F_{2}

, acting on a body produce rotation on it about point

O

. What happens when (i)

F_{1} = F_{2}

, and (ii)

F_{1} > F_{2}

EASY

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 1

What is the difference between a particle and body?

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10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 1 - Force>QUESTIONS>Q 2

Define centre of gravity of a body.