Physics · Science General

Newtonian Mechanics and Forces

1,559 Questions

Newtonian mechanics studies the motion of objects and the physical laws governing them. This hub covers friction, gravitational force, inertia, and vector quantities. Mastering these fundamental physics concepts is essential for various government competitive exams.

Laws of motionFriction and inertiaVector and scalar quantitiesGravitational accelerationArchimedes principle

Newtonian Mechanics and Forces Questions

Multiple choice evs - i substances, objects and energy renewable resources alternative fuels and energy sources alternative sources of energy

A point in the object where entire mass of an object is said to be concentrated is:

  1. Point of Buoyancy

  2. Centre of Mass

  3. Point of Pressure

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A point where entire mass of the body is assumed to be concentrated is called center of mass. This point may or may be inside body or outside.


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.

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

Other than changing the state of motion of an object, force

  1. can change the shape of an object

  2. has no other effect

  3. can change the colour of an object

  4. can change the state of rest of an object
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Effects of force on an object are
(i) to change the state of motion of the object
(ii) to change the shape and size of the object

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

Mark the incorrect statement(s)

  1. Length of a rubber band increases,when a stretching force is applied

  2. A spring shortens in length on the application of a compressive force

  3. Gold on hammering flattens to form a thin leaf

  4. None of above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Force can also bring change in dimensions and all the above options are its examples.

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

Mark the correct option

  1. The state of motion of an object is described by its speed only

  2. Many a time application of force does not result in a change in the state of motion of an object.

  3. By sitting on a bicycle seat force is applies to the spring fixed to the seat of a bicycle

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is common experience that many a time application of force does not result in a change in the state of motion.For example,a heavy box may not move at all even if you apply the maximum force that you can exert.