Advertisements
Advertisements
Question
State two conditions for work to be done.
Advertisements
Solution
The two conditions are:
(i) Application of-force on the body.
(ii) Displacement of the body in the direction of the force.
RELATED QUESTIONS
State the condition when the work done by a force is positive. Explain with the help of examples.
What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.
State two factors on which power spent by a source depends. Explain your answer with examples.
Differentiate between work and power.
Name the quality which is measured in eV
The moment of a force 10 N about a point 0 is 4 Nm. Calculate the distance of point of application of force from the point 0.
Work is a scalar quantity because it is a measure of transfer of energy without indicating any direction
What do you understand by work? Is work a scalar or a vector quantity?
Justify the statement. “Power can be expressed as the product of force and velocity.”
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
