Advertisements
Advertisements
Question
Is work done a scalar or a vector physical quantity?
Advertisements
Solution
Work is a scalar quantity because it is a measure of transfer of energy without indicating any direction.
APPEARS IN
RELATED QUESTIONS
Define 1 J of work.
State two conditions when no work is done by a force.
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
Is the motion of moon around the earth in circular path an accelerated motion?
Fill in the boxe to show the corresponding energy transformation.
A block of mass 30 kg is pulled up a slope, as shown in diagram with a constant speed, by applying a force of 200 N parallel to slope.
A and B are initial and final positions of block.
(i) Calculate the work done by force in moving the block from A to B.
(ii) Calculate P.E. gained by block. [g=10ms-2]
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A green plant is carrying out photosynthesis.
