MCQ on Dynamics. We covered all the MCQ on Dynamics in this post for free so that you can practice well for the competitive exam that covers the dynamics syllabus.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
We also covered the topics like simple machines, kinematics, and our universe on our website for free. They are provided in the related posts section below. Make sure you also check them and practice well for the exam.
Related Posts:
- Multiple Choice Questions on Simple Machines
- MCQ Questions on Kinematics
- Universe Quiz Questions with Answers
Dynamics MCQ for School Students
The time taken by a body for four complete revolutions is 4T seconds and for one complete revolution is T seconds, The motion of the body is
1. circular motion
2. elliptical motion
3. uniform circular motion
4. None of these
Option 3 – uniform circular motion
The time period (T) of a body in uniform circular motion, is
1. different for different revolutions
2. same for any revolution
3. not predicted
4. None of these
Option 2 – same for any revolution
The angle through which the radius vector rotates in a given time is called its
1. angular velocity
2. angular displacement
3. angular acceleration
4. angular speed
Option 2 – angular displacement
The units of angular displacement are ( MCQ on Dynamics )
1. degrees
2. minutes
3. seconds
4. radians
Option 4 – radians
The rate of change of angular displacement is called……
1. angular velocity
2. angular momentum
3. velocity
4. None of these
Option 1 – angular velocity
The time taken by a body in rotatory motion to make one complete rotation is called
1. period of time
2. frequency
3. escaping time
4. None of these
Option 1 – period of time
The period of time ‘T’ of earth’s revolution, is
1.1 day
2. 1 year
3. 1 month
4. 1 week
Option 2 – 1 year
The period of time ‘T’ of moon’s revolution, is :
1.27.3 seconds
2. 27.3 hours
3. 27.3 x 24 x 60 x 60sec
4. 27.3 x 24 × 60 sec
Option 3 – 27.3 x 24 x 60 x 60sec
The reason for a particle moving along a circular path of radius ‘r’ and the centre ‘O’ to travel along the tangential line at every point on the path, is
1. inertia of rest
2. inertia of motion
3. inertia of direction
4. None of these
Option 3 – inertia of direction
The force which acts continuously on a particle initially moving with a linear velocity and makes it travel along a circular path is called centripetal force. The reason for being called so, is
1. the force acts normally to the direction of linear velocity (direction of tangential line)
2. the force acts always along the radius and towards the centre
3. the force acts normally on the particle at every point on the path
4. all of these
Option 4 – all of these
The centripetal force required for the earth to revolve round the sun, is
1. the gravitational force between the earth and the moon
2. the gravitational force between the earth and the Sun
3. the gravitational force between the Moon and the Sun
4. all of these
The centripetal acceleration required for a satellite to revolve round the planet, is
1. the gravitational force between the Sun and the planet
2. the gravitational force between the sun and the satellite
3. the gravitational force between the planet and the satellite
4. None of these
Option 3 – the gravitational force between the planet and the satellite
The centripetal force required for a stone suspended with a thread to the finger, to make rotatory motion, is
1. supplied by the thumb
2. supplied by the finger to which the thread is attached
3. supplied by the little finger
4. supplied by any finger
Option 2 – supplied by the finger to which the thread is attached
A block on a rotating frame is pulled a bit from the rim towards the centre of the rotation, it moves back again sticking to the rim, this is because
1. a force acting on it is pushing away from the centre
2. the centrifugal force acts on it
3. the centripetal force acts on it
4. (1) and (2)
Option 4 – (1) and (2)
The centripetal force required for the electrons to revolve round the nucleus of an atom, in
1. the electrostatic force between the electrons and the nucleus
2. the force of current electricity between the electrons
3. the magnetic force between the electrons and the nucleus
4. all of these
Option 1 – the electrostatic force between the electrons and the nucleus
The wooden block on a rotating frame being rest at the rim of the rotating frame, this is due to
1. the centripetal force acted by the rim on the block
2. the centrifugal force acting on the block to push it towards the centre
3. the equilibrium that exists between the centripetal force exerted by the rim on the block to push it towards the centre, and the centrifugal force tries to push the block away from the centre
4. all of these
Option 3 – the equilibrium that exists between the centripetal force exerted by the rim on the block to push it towards the centre, and the centrifugal force tries to push the block away from the centre
An imaginary co-ordinate system which is either at rest or in uniform motion and where Newton’s laws are valid is called an
1. inertial frame of reference
2. non-inertial frame of reference
3. rotating frame of reference
4. all of these
Option 1 – inertial frame of reference
An observer sitting in one of the two trains moving with same uniform velocity and adjacent to each there will not be able to detect the motion of the other trains. The imaginary co-ordinate system attached to one of the trains :
1. Newton’s laws of motion are not applicable
2. Newton’s laws of motion are applicable
3. Newton’s universal law of gravitation is applicable
4. Newton’s universal law of gravitation is not applicable
Option 2 – Newton’s laws of motion are applicable
The centrifugal force is a -in a non-inertial frame of reference
1. pseudo force
2. real force
3. fictitious force
4. None of these
Option 2 – real force
The centrifugal force is a ……. in an inertial frame of reference.
1. real force
2. fictitious force
3. both of these
4. none of these
Option 2 – fictitious force
The force acting on a body in circular motion is such that
1. it keeps the magnitude of ‘r’ remains constant without changing direction and magnitude of velocity of the object.
2. it changes the direction of velocity and the magnitude of ‘r’ without changing the magnitude of velocity.
3. if keeps the magnitudes of velocity and ‘r’ remains constant while changing the direction of velocity.
4. it keeps the direction of velocity and magnitude of ‘r’ remains constant while changing the magnitude of velocity.
Option 3 – if keeps the magnitudes of velocity and ‘r’ remains constant while changing the direction of velocity.
The direction of velocity of an object moving along a circular path having centre ‘O’ and radius ‘r’ at a point on its path, is
1. along the tangential line drawn to the circle at that point
2. along the line perpendicular to the tangent of the circle at that point
3. to the inside of the circular path
4. None of these
Option 1 – along the tangential line drawn to the circle at that point
The physical quantity which changes or tends to change the state of rest or the state of uniform motion of a body in a straight line is
1. inertia
2. force
3. mass
4. weight
Option 2 – force
The study of motion of a body under the action of a force is called
1. dynamics
2. kinematics
3. force
4. stress
Option 1 – dynamics
Which among the following causes motion in bodies? ( MCQ on Dynamics )
1. Inertia
2. Mass
3. Force
4. Stress
Option 3 – Force
If a body is moved along a straight line, then its motion is called as
1. translatory motion
2. rotatory motion
3. oscillatory motion
4. periodic motion
Option 1 – translatory motion
The motion possessed by a body executing a circular motion at any point on its circular path, is
1. linear motion
2. rotatory motion
3. oscillatory motion
4. None of these
Option 1 – linear motion
The motion executed by a simple pendulum in a wall clock, is
1. linear motion
2. rotatory motion
3. oscillatory motion
4. None of these
Option 3 – oscillatory motion
The motion of a wind mill is
1. vibratory motion
2. translatory motion
3. rotatory motion
4. None of these
Option 3 – rotatory motion
The motion of every particle on a body in rotatory motion, is
1. rotatory motion
2. translatory motion
3. vibratory motion
4. None of these
Option 1 – rotatory motion
A special case of rotatory motion, is
1. translatory motion
2. oscillatory motion
3. circular motion
4. None of these
Option 3 – circular motion
We covered all the mcq on dynamics in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting the mcqtube website homepage.
