Tag: force and it's unit

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Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

An iron block of sides $50 cm\times 8 cm\times 15 cm$ has to be pushed along the floor. The force required will be minimum when the surface in contact with ground is

  1. $8 cm\times 15 cm $surface

  2. $50 cm\times 15 cm $surface

  3. $8 cm\times 50 cm $surface

  4. Force is same for all surfaces.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Force will be same for all the surfaces.
Hence, the correct option is $(D)$

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Fill in the blanks:

The force responsible for changing the state of motion of a moving object in contact between surface is the _______.

  1. non-contact force

  2. force of friction

  3. magnetic force

  4. muscular force
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The friction force is the force exerted by a surface an object moving across it. It acts in a direction to oppose the relative motion between objects.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Fill in the blanks:

The________ force is the force exerted by a surface on an object when it moves across it or make an effort to move across it.

  1. magnetic

  2. friction

  3. gravitational

  4. electrostatic
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Frictional force acts between two surfaces to oppose the relative motion between the surfaces. It acts on the body moving across it or trying to move across it.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Fill in the blanks:
The force of friction arises due to contact between surfaces. It is an example of _________ force

  1. non-contact force

  2. muscular force

  3. contact force

  4. gravitational force
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Friction is a force that is exerted by a surface on an object that is moving on the surface. So, it is a contact force.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Which of the following cases represent that a force can change the shape of an object?

  1. A man trying to stop a sliding car.

  2. A weight put at the centre of a metal scale placed between two bricks.

  3. Two girls pulling each other.

  4. A man pulling a cow with a rope around his neck.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A weight put at the center of a metal scale placed between two bricks will bend the scale from the middle.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

A spring is compressed when a force is applied. This is an example of

  1. force changing the shape of an object

  2. force changing the motion of an object

  3. force breaking a rigid object

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A spring gets compressed by the application of a force. This is an example of force changing the shape of an object.