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प्रश्न
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उत्तर
Principle of moments: If a body is in equilibrium under the action of number of force, then the sum of clockwise moments is equal to the sum of anticlockwise moments.
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संबंधित प्रश्न
A machine raises a load of 750 N through a height of 16 m in 5 s. calculate:
- energy spent by machine,
- power at which the machine works.
Its moment of a force scalar or a vector quantity?
What is the relationship between Nm and dyne cm?
Give two examples of couple action in our daily life.
A woman pulls a bucket of water of total mass 5 kg from a well which is 10 s. calculate the power used by her.
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
In what way does an ‘Ideal machine’ differ from a ‘Practical machine’?
State larger units of power.
One labourer carried four pans of road metal through a distance of 100 metres. If he carries two pans of road metal through a 200 metre distance ______ work will be done.
