Question

7. Give an example each for a body, where the centre of mass lies inside the body and outside the body. 8. Where does the centre of mass of two particles of equal mass lie ? What is its position vector ? 9. Write an expression for the centre of mass of a two particle system 10. Write an expression for the velocity of the centre of mass of a system of particles. 11. What is a rigid body? 12 Name the rotational analogue of force. Give its SI unit. 13. Is torque a scalar or vector ? If vector, which rule is used to determine its direction ?


no copy no span other wise I reported your last 10 answers​

Answer 1

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Answer 2

Answer:

7.When we consider the case of the center of mass of boomerang, it lies outside the body. Because of the shape and curves of the body of the boomerang, it has an asymmetrical distribution of mass. ... For example, a circular cylinder of constant density has its center of mass on the axis of the cylinder

8.For a system of two particles with equal masses, CoM is the point that lies exactly in the middle of both. From the equation above we get the centre of mass of two particles with equal masses. From the above equation, it is clear that the CoM of two particles lies in the midway of both.

9.see figure friends

10.

Motion of Center of Mass

Change of displacement of time is the velocity. where v1 is the velocity of the particle and v = \frac{dr}{dt} is the velocity of centre of mass. This is an expression for velocity of centre of mass.

11.In physics, a rigid body is a solid body in which deformation is zero or so small it can be neglected. The distance between any two given points on a rigid body remains constant in time regardless of external forces or moments exerted on it. A rigid body is usually considered as a continuous distribution of mass.

12.The physical quantity which is the rotational analogue of force is Torque.. It's SI unit is Newton metre (N m).... Relation between angular momentum and torque is same as between the linear momentum and force.

13.Torque is a vector quantity. The direction of the torque vector depends on the direction of the force on the axis.

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