Advertisements
Advertisements
प्रश्न
A boy does work when he pushes against a brick wall. (yes/no).
Advertisements
उत्तर
Yes
APPEARS IN
संबंधित प्रश्न
A coolie is moving on a road with a luggage on his head. Does he perform work against the force of gravity? Give reason for your answer.
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 __________.
In case of negative work, the angle between the force and displacement is :
A boy of mass m climbs up a staircase of vertical height h.
- What is the work done by the boy against the force of gravity?
- What would have been the work done if he uses a lift in climbing the same vertical height?
Name the CGS unit of work.
How is horse power related to the S. I. unit of power?
A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
