1. Nut-cracker is an example of

2. Velocity ratio of single moveable pulley is

3. If 20 N force is applied on a body at distance of 5cm from the pivot, then find its moment of force.

4. Unit of moment of force is

5. Scissors are an example of

6. Efficiency work of simple machine is 75%

7. Which of the following is correct by simple machine?

8. Which of the following is called continuous lever?

9. Fishing rod is an example of

10. For second class lever,

11. Lemon squeezer is

12. Fore arm of man is

13. M.A has unit

14. Classes of lever is

15. For perfect machine (Ideal machine), efficiency work should be

16. If M.A. of simple machine is 2 and V.R. is 5, then its efficiency work is

17. Unitless quantity is

18. Screw driver is an example of

19. Beam balance is an example of

20. V.R. is