PHYSICS

 Class 10                                                                     Marks: 20 Physics Revision ATTEMPT ALL QUESTIONS. Define moment of force. Write relationship between the SI and CGS unit of moment of couple. 2 Find the mass of the scale in equilibrium .                                          Draw diagrams and locate the centre of gravity  of hollow cone and triangular sheet. 2  State the  type of work done by a coolie  when i)  he lifts a load up ii) when he moves on a horizontal platform carrying load on his head.     2 A force is applied on a body of mass 20kg movong with a velocity of 40 m/s. The body attains a velocity of 50 m/s in 2  s. C...