- Rotational Motion
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- Angular velocity
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- Angular acceleration
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- Rotation with constant angular acceleration
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- Kinetic energy of Rotation
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- Calculation of moment of inertia
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- Parallel Axis Theorem|Theorems of Moment of Inertia
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- Perpendicular Axis Theorem
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- Torque
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- work and power in rotational motion
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- Angular acceleration
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- Relationship between Angular momentum and torque
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- Conservation of Angular momentum
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- Radius of gyration
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- Rolling Motion|Kinetic Energy of rolling bodies
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- Rotational Motion problems with solutions

- We have already studied motion with constant acceleration while studying translational motion

- Now we will study the rotational motion with constant angular acceleration

- when a rigid body rotates with constant acceleration we have

- Thus we have

- Again we have angular velocity

- Equation (8) ,(9) and (10) are the equation of motion with constant angular acceleration

slowing at first. What time elapses before its angular velocity is 18 rad/s in the direction opposite to its initial

angular velocity?

a 3 sec

b 6 sec

c 18 sec

d none of these

ω

ω=-18

angular acceleration(α)=-2

Now

ω=ω

or t=18

Class 11 Maths Class 11 Physics Class 11 Chemistry