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One mega watt is equivalent to ……… watt.

1. If the work done in 9s is 63 J, the power is ……. .
2. There are …….. W in 1 hp.
3. 1 kW power is ……… than 1 hp.
4. The unit watt is the same as …… .
5. The unit one joule per second is equivalent to ……… .
6. The mechanical advantage of a machine depends on the ………. present.
7. Mechanical advantage is the ratio of the …… to the effort.
8. The velocity ratio is usually much greater than ………. .
9. If a machine is …….. the mechanical advantage will be equal to the velocity ratio.
   26.The ability to retain the original form is called ……… .
10. The ratio of the stress to the strain is ……… .
11. A spring obeys ……… law.

1. Newton’s first law gives the idea of ……… .
   (2) By Newton’s second law , the acceleration is directly proportional to ……… .
   (3) Newton’s third law express the idea of ………. .
   (4) Action force and reaction force cannot ……… out each other.
   (5) Force has both magnitude and ……. .
   (6) Force is a ……… quantity.
   (7) The SI unit for force is ……….. .
   (8) Mass is a measure of ………. .
   (9) The attracting force of the earth acting on a body is defined as ……… .
   (10) Weight is a …….. quantity.
   (11) One newton is equal to …….