Advertisements
Advertisements
प्रश्न
What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.
Advertisements
उत्तर
S.I unit of work is Joule.
C.G.S unit of work is erg.
Relation between joule and erg:
1 joule = 1 N × 1 m
But 1 N = 105 dyne
And 1 m = 100 cm = 102 cm
Hence, 1 joule = 105 dyne × 102 cm
= 107 dyne × cm = 107 erg
Thus, 1 Joule = 107 erg
APPEARS IN
संबंधित प्रश्न
Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.
How is kilowatt hour related to joule?
Name the quality which is measured in eV
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
Work is a scalar quantity because it is a measure of transfer of energy without indicating any direction
How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?
A boy takes 3 minutes to lift a 20 litre water bucket from a 20 m deep well, while his father does it in 2 minutes. Compare:
- the work, and
- power developed by them.
A boy takes 3 minutes to lift a 20 litre water bucket from a 20 m deep well, while his father does it in 2 minutes.
How much work each does? Take density of water = 103 kg m-3 and g = 9.8 N kg-1.
State the C.G.S. unit of work. How it is related to its S.I. unit?
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person climbs a ladder.
