Question 61 : A body is said to be in static equilibrium?
1. When it is moving around a circular path.
2. When it is moving with uniform velocity.
3. When it is a. rest.
4. When it is accelerated by the external force.
View Answer   Discuss with Members

Question 62 : A body is said to be in dynamic equilibrium?
1. When it is moving with changing acceleration
2. When it is in uniform motion along a circular path.
3. When it possess instantaneous velocity.
4. When it is in uniform motion along a straight line.
View Answer   Discuss with Members

Question 63 : Two forces which are equal in magnitude but opposite in direction and not acting along the same line is a?
1. Rotation
2. Couple
3. Torque
4. Motion
View Answer   Discuss with Members

Question 64 : Larger the moment arm, the greater will be the?
1. Velocity
2. Torque
3. Momentum
4. Axis of rotation.
View Answer   Discuss with Members

Question 65 : The centre of mass of a system of particles?
1. None of these.
2. Coincides with the centre of gravity only in a uniform gravitational field.
3. Coincides always with the centre of gravity.
4. Never coincides with the centre of gravity.
View Answer   Discuss with Members

Question 66 : Counter..clockwise rotation is taken as?
1. Zero
2. Positive
3. Neutral
4. Negative
View Answer   Discuss with Members

Question 67 : The greater the force, the larger will be the
1. Torque
2. mass
3. Axis of rotation.
4. Centre of mass.
View Answer   Discuss with Members

Question 68 : If the axis of rotation passes through the body itself the corresponding motion is called?
1. Translatory motion.
2. Spin motion.
3. Swinging motion.
4. Rotatory motion.
View Answer   Discuss with Members

Question 69 : The motion of planets round the Sun is an example of?
1. Translatorv motion.
2. Vibrational motion.
3. Spin motion.
4. Orbital motion.
View Answer   Discuss with Members

Question 70 : The daily rotation of the earth about its own axis,-rotation of fly wheel about its axle, a rotating top are all the examples of?
1. Rotatory motion.
2. Circular motion.
3. Orbital motion.
4. Spin motion.
View Answer   Discuss with Members