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Grade: 12
        
How can we conserve linear momentum if friction is external force when particle hits the sphere ?
9 months ago

Answers : (1)

Vikas TU
10040 Points
							
Dear student 
Linear momentum is defined as the product of mass and linear velocity of a body.
A body of mass ‘m’ moving with velocity ‘v’ has a linear momentum of,
P = m v [bold letters indicate vector quantities]
Angular momentum is defined as the product of moment of inertia and angular velocity of a body.
A body of mass ‘m’ revolving in a circular path of radius ‘ r ’ with angular velocity ‘ ω ’ will have an angular momentum as,
L = m ( r × ω ) [bold letters indicate vector quantities]
Both angular momentum and linear momentum are conserved quantities. In absence of any external torque the angular momentum of a rotating or a revolving system will be constant. Similarly, in absence of any external force the linear momentum of remains constant.
3 months ago
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