work energy power class 11th important questions

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                                IMPORTANT QUESTIONS OF WORK,ENERGY & POWER

1) Convert 1 Joule of energy into erg ?

2) A particle moves along X-axis from X=0 To X=5 under the influence of force F=5-4x+3X2. Find the work done in this process?

3) A body of mass 5 kg initially at rest is subjected to a force of 20N . What is the K.E required by the body at the end of 10 seconds?

4) State and prove work energy theorem?

5) What is relation between power and energy ? Show 1 KW=3.6*106J

6) Relation between kinetic energy and linear momentum?

7) Conservative and Non conservative Force ?

8) Define Kinetic energy & potential energy . Give one example.

9) What is Kinetic Energy Momentum Theorem?

10) The frequency 'V' of a stretched string depends upon:(i) its length l      (ii) its mass per unit length m &  (iii) the tension T in the string. Obtain an expression for frequency 'V' by using method of  dimensions.