Question

1. Define kinetic energy and derive equation about rigid body?
2. Define moment of inertia and write the formula for ring, solid sphere and hallow sphere?
3. Define torque and explain relation between torque and angular momentum?
4. Define cenre of mass and center of gravity and write difference between them?



can anyone help by answering the questions ♥️​

Answer 1

Answer:

Consider a rigid body rotating with a constant angular velocity ω about an axis passing through the point O. As the body rotates, all the particles perform uniform circular motion. The linear speed of the particle with mass m1 is V1=r1ω. Therefore, its kinetic energy is. E1=21m1V12=21m1r12ω2