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संबंधित प्रश्न
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.
Work done by a boy depends on the time in which he does work.
Define the term energy.
A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2).
Each of the following statement describes a force acting. Which force is causing work to be done?
Choose one or more correct alternatives.
Joule is the unit of ______.
- force
- work
- power
- energy
Name the force acting away from the centre of circular path.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
No work is done by a man moving on a horizontal road while carrying a box on his head. Explain.
Can every force produce work?
Name two places in India where electricity is generated from nuclear power plants.
What is work?
A body of mass 0.5 kg travels on straight line path with velocity v = (3x2 + 4) m/s. The net work done by the force during its displacement from x = 0 tox = 2 m is ______.
