If no external force is acting on the system,net linear momentum of the system is conserved.If system is acted upon by some external force,the component of momentum of the system,along which no external force is present or their vector sum is zero,is conserved. If a sharp blow is given to a body its linear momentum changes immediately.Changein angular momentum not only depends on the magnitude of the blow but also on point ofapplication.In the case of symmetrical body we take the axis of rotation through center of the body. A wedge of mass 4m is placed at rest on a smooth horizontal surface. A uniform solids phere of mass m and radiusr is placed at reston the flat portion of the wedge at the point Q as shown in the figure. A sharp horizontal impulse P is given to the sphere at a point below `h=0.4r`from the center of the sphere.The radius of curvature of the curvedportion of the wedge is R.Coefficient off riction to the left side of point Q is `mu` and to the right side of point Q is zero. For a body to rollon a surface without slipping, there should be no relative velocity between the points of contact. The maximum height to which the center of mass of the sphere will climb on the curved portion of the wedge is A. `2P^(2)/(5m ^(2)g`B. `(P^(2))/(5m^(2)g)`C. `(P^(2))/(2m^(2)g)`D. None of these

If no external force is acting on the system,net linear momentum of th

1.	If no external force is acting on the system,net linear momentum of the system is conserved.If system is acted upon by some external force,the component of momentum of the system,along which no external force is present or their vector sum is zero,is conserved. If a sharp blow is given to a body its linear momentum changes immediately.Changein angular momentum not only depends on the magnitude of the blow but also on point ofapplication.In the case of symmetrical body we take the axis of rotation through center of the body. A wedge of mass 4m is placed at rest on a smooth horizontal surface. A uniform solids phere of mass m and radiusr is placed at reston the flat portion of the wedge at the point Q as shown in the figure. A sharp horizontal impulse P is given to the sphere at a point below `h=0.4r`from the center of the sphere.The radius of curvature of the curvedportion of the wedge is R.Coefficient off riction to the left side of point Q is `mu` and to the right side of point Q is zero. For a body to rollon a surface without slipping, there should be no relative velocity between the points of contact. The maximum height to which the center of mass of the sphere will climb on the curved portion of the wedge is A. `2P^(2)/(5m ^(2)g`B. `(P^(2))/(5m^(2)g)`C. `(P^(2))/(2m^(2)g)`D. None of these
Answer» Correct Answer - A

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