Newton's Second Law: Rotatory Version
Trending Questions
If the line of action of the applied force intersects the Axis of rotation, then the torque of this force about the axis of rotation is
Always zero
Sometime non-zero
Always non-zero perpendicular to the axis of rotation
Non-zero and along the axis of rotation
Which of the following cases, a rigid body, necessarily has an angular acceleration.
Line of action of force is parallel to Axis of rotation
Line of action of force is perpendicular to the axis of rotation
Line of action of the force is perpendicular and skew to the Axis of rotation
Line of action of the force intersects the axis of rotation
If net external force on a body adds up to zero, which of the following statements are not necessarily true?
Net External torque about any point need not be zero
Linear acceleration of the centre of mass is zero
Angular acceleration of the body has to be zero
Angular momentum about any axis may not be conserved
Which of the following are the necessary and sufficient conditions for a body to have some angular acceleration about a fixed Axis?
Net external force is non-zero
Net external torque is non-zero
Net external torque is zero
Angular momentum is not conserved

The torque of force about a line is dependent of the choice of the origin which lies on that line itself.
False
True

- 2.5 rad/s2
- 5 rad/s2
- π rad/s2
- 10 rad/s2

- t=4mr2ωτ
- t=2m(r2+2a2)ωτ
- t=2m(a2+2r2)ωτ
- t=2ma2ωτ
- 1.5 s
- 2 s
- 0.5 s
- 1 s
- 2.5 s
Which of following rotational physical quantities do not match to given translational analogies?
Angular velocity-linear velocity
Angular displacement - linear displacement
Torque - Kinetic Energy
Moment of Inertia - mass