Advertisements
Advertisements
प्रश्न
State the S.I. and C.G.S. units of energy. How are they related?
Advertisements
उत्तर
The S.I. unit of energy is the joule (J) and the C.G.S. unit is erg.
1J = 107 erg.
संबंधित प्रश्न
A boy weighing 40 kgf climbs up a stair of 30 steps each 20 cm high in 4 minutes and a girl weighing 30 kgf does the same in 3 minutes. Compare:
- The work done by them.
- The power developed by them.
Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.
Draw a simplified diagram of a lemon crusher, indicting of load and effort
State the condition when the work done by a force is positive. Explain with the help of examples.
Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaced from its initial position.
What physical quantity does the electron volt (eV) measure? How is it related to the S.I. unit of that quality?
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?
State and define the unit of force in the S.I. system.
State the practical unit mainly used in mechanical engineering and write down its equivalent in watt.
