Advertisements
Advertisements
प्रश्न
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
State whether work is done or not, by writing yes or no, in the following case:
A coolie stands with a box on his head for 15 min.
पर्याय
Yes
No
Advertisements
उत्तर
No.
APPEARS IN
संबंधित प्रश्न
Define 1 J of work.
The S.I. unit of work is
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
State two disadvantages of producing hydroelectricity.
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
Calculate the amount of work done by a child carrying a bag of 20 kg when he moves a distance of 40 m in
(a) Vertical direction, and
(b) Horizontal direction
The work done by the heart is 1 Joule per beat. Calculate the power of the heart if it beats 72 times in one.
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.
