Advertisements
Advertisements
प्रश्न
Can every force produce work?
एका वाक्यात उत्तर
Advertisements
उत्तर
No, every force cannot produce work. Force can produce work if the applied force cause displacement in the direction of the force.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
State two conditions when no work is done by a force.
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
Explain degradation of energy by taking two examples of your daily life.
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
What is the amount of energy spent in lifting 1 kg through 1 m? Take g = 10 ms-2.
How is energy stored in a clock?
A girl of mass 50 kg runs up a flight of 40 steps in 20 seconds. If each step in 20 cm high, calculate the power developed by the girl. (g= 10 ms-2).
Give an example
Light energy changes to electrical energy.
A body of mass 60 kg has the momentum 3000 kgm/s-1. Calculate: the speed of the body.
Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?
