Advertisements
Advertisements
Question
State whether work is done or not, by writing yes or no, in the following case:
A boy climbs up 20 stairs.
Options
Yes
No
MCQ
One Word/Term Answer
Advertisements
Solution
Yes
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
What is the work done by the moon when it revolves around the earth?
A man lifts a mass of 20 kg to a height of 2.5 m. Assuming that the force of gravity on 1 kg mass is 10 N, find the work done by the man.
Name five appliances or machines which use an electric motor.
Name the physical quantity which is associated with the work done by a body.
Define one horse power.
Fill in the boxe to show the corresponding energy transformation.

A bullet of mass 25 g has a velocity of 600 ms-1. What is the kinetic energy of the bullet? If it penetrates 50 cm into a target, find the resistive force offered by the target.
How is horse power related to the S. I. unit of power?
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).
A ______ should act on an object.
