Advertisements
Advertisements
Question
Can work done be zero even if force acts on the body?
Solution
APPEARS IN
RELATED QUESTIONS
Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.
When does a force perform work?
State the energy transformation on the following:
Electricity is obtained from solar energy.
What are the quantities on which the amount of work done depends? How are they related to work?
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
What should be the angle between the direction of force and the direction of motion of a body so that the work done is zero?
A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy pushes a bicycle. The bicycle moves through a certain distance. In which case was the work done more : on the trick or on the bicycle? Give a reason to support your answer.
Define Translational motion.
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
Can two agents, doing the same work, have different power?
A is a push or a pull ______.
What is power? How do you differentiate kilowatt from kilowatt-hour? The Jog Falls in Karnataka state are nearly 20 m high. 2000 tonnes of waterfalls from it in a minute. Calculate the equivalent power if all this energy can be utilized? (g = 10 m s–2)