Advertisements
Advertisements
Question
What is the ratio of SI units to CGS units of 'work'?
Advertisements
Solution
The SI unit of work is 'joules' and the CGS unit is 'erg'.
1 joule = 107 erg
Thus the ratio is 107: 1
APPEARS IN
RELATED QUESTIONS
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?

A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The loss in potential energy of the body,
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
Explain the difference between a uniform linear motion and a uniform circular motion.
Nm is the unit of .......
Complete the following sentences:
The SI unit of work is ....... and of power is .......
A machine raises a load of 750 N through a height of 16 m in 5s. calculate:
(i) work done by machine,
(ii) power at which the machine works.
A block of mass 20 kg is pulled up a slope (fig.12) with a constant speed by applying a force of 500 N parallel to the slope. A and B are initial and final positions of the block.
(a) Calculate the work done by the force in moving the block from A and B.
(b) Calculate the potential energy gained by the block.

Fill in the boxe to show the corresponding energy transformation.

Give an example
Chemical energy changes to electrical energy.
