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संबंधित प्रश्न
Explain the difference between a uniform linear motion and a uniform circular motion.
Is work done a scalar or a vector physical quantity?
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
What is the difference between renewable and non-renewable resources?
The work done by the heart is 1 Joule per beat. Calculate the power of the heart if it beats 72 times in one
A coolie is pushing a box weighing 1500 N up an inclined plane 7.5 m long on to a platform, 2.5 m above the ground.
(i) Calculate the mechanical advantage of the inclined plane. (ii) Calculate the effort applied by the coolie.
(iii) In actual practice, the coolie needs to apply more effort than what is calculated. Give one reason why you think the coolie needs to apply more effort.
