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Find the centre of mass of a uniform tri...

Find the centre of mass of a uniform triangula lamina.

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It lies at the centroid of the triangle i.e. at the point of intersection of three medians of the triangle.
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PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-VERY SHORT ANSWER QUESTIONS
  1. Does centre of mass of a rigid body lie always on the body ?

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  2. On what factors does the position of cm of a rigid body depend ?

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  3. Find the centre of mass of a uniform triangula lamina.

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  4. Determine the coordinates of the centre of mass of a right circular so...

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  5. What is nature of motion of cm of an isolated system ?

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  6. Find the centre of mass of a uniform triangula lamina.

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  7. What is an isolated system ?

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  8. Name the rotational analouge of force. What ar its units ?

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  9. Write an expression for torque. Which rule is used for finding its dir...

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  10. Write the dimensional formula of angular momentum. Is it scalar or vec...

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  11. Name the physical quantity whose dimensions are same as that of angula...

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  12. Which physical quantity is conserved when a planet revolves around the...

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  13. What is angular velocity of earth spinning around its own axis ?

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  14. Moment of inertia of a hollow cylinder of mass M and radius R, about t...

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  15. What is moment of inertia of a solid cylinder of mass m, length l and ...

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  16. What is radius of gyration of a soild sphere of mass m and radius r ab...

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  17. On what factors does the radius of gyration of a body depend ?

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  18. A ring and a circular disc of different materials have equal masses an...

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  19. A disc of metal is melted and recast in the from of a soild sphere. Wh...

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  20. What are the units and dimensions of moment of inertia ? Is it a vecto...

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