Length and time Physical quantities

Jun 17th, 2015
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The foundation of physics rests upon physical quantities in terms of which the laws of physics are expressed. Among these are mass, length, time velocity, force, density, temperature, electric current, and numerous others.Physical quantities are often divided into two categories: base quantities and derived quantities.

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Question .1. State Newtons Second Law of motion both in words and in Equation form. Under what condition does this equation becomes F = ma? Question .2. What is S I unit of force and how is it related to the CGS unit of force?Question .3. Differentiate between mass and weight. Question .4. Write the S I unit of mass and weight. Question .5. A force is applied on (i) a rigid body and (ii) non rigid body. How does the effect of force differ in the two cases ? Question .6. Define (i) Work(ii) Power and(iii) Energy. Question .7. Write the expression for the work done by constant force acting on a body, which gets displaced from its initial position in a direction different from the direction of force.Or,How can the work done be measured when force is applied at an angle to the direction of displacement ?Question .8. When a body moves in a circular path how much work is done ? Or, State the amount of work done by an object when it moves in a circular path for one complete rotation. Give reason to justify your answer. Question .9. How is work done related to the applied force ? Question .10. What should the angle between force and displacement be to get the (i) minimum work (ii) maximum work ? Question .11. Give an example when work done by force acting on a body is zero even though the body gets displaced from its initial position by the application of the force. Question .12. A truck driver starts off with his loaded truck. What are the majo

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