MEDIUM
9th ICSE
IMPORTANT
Earn 100

Explain what is non-contact force? Give two examples.

Important Questions on Laws of Motion

MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 2

Classify the following amongst contact and non-contact forces:

  1. Frictional force
  2. Normal reaction force
  3. Force of tension in a string.
  4. Gravitational force
  5. Electrostatic force
  6. Magnetic force.

 

MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 3
Give one example for contact force. 
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 3
Give one example when force is at a distance.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 4
A ball is hanging by a string from the ceiling of the roof. Draw a neat labelled diagram showing the forces acting on the ball and the string. 
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 4
A spring is compressed against a rigid wall. Draw a neat labelled diagram showing forces acting on the spring.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 4
The wooden block is placed on top of a table. Name the forces acting on the block and draw a neat and labelled diagram to show the point of application and direction of these forces.
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 5
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you ? 
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 3 - Laws of Motion>EXERCISE–3(A)>Q 6
The separation between two masses is reduced to half. How is magnitude gravitational force between them is affected ?