Advertisements
Advertisements
प्रश्न
Is work a scalar or a vector quantity?
Advertisements
उत्तर
Work is a scalar quantity as it has only magnitude.
APPEARS IN
संबंधित प्रश्न
A force acts on a body and displaces it by a distance S in a direction at an angle θ with the direction of the force. What should be the value of θ to get the maximum positive work?
Power spent by a body depends on the time for which it does work.
A bullet of mass 0.5 kg slows down from a speed of 5 m s-1 to that of 3 m s-1. Calculate the change in kinetic energy of the ball.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
Can two agents, doing the same work, have different power?
Name the material commonly used for the manufacturing of solar cells.
An electric motor pump is 60% efficient and is rated 2.5 H.P. Calculate the maximum load it can lift through a height of 10m in 8 sec. (1 H.P. = 750 W).
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
