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प्रश्न
Give two examples of couple action in our daily life.
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उत्तर
Examples of couple action in daily life:
(i) Opening and closing the cap of a bottle
(ii) Turning a key in a lock
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संबंधित प्रश्न
Work done by a boy depends on the time in which he does work.
Define 1 joule of energy.
How is work related to energy?
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
A car is running at a speed of 15 km h-1 while another similar car is moving at a speed of 45 km h-1. Find the ratio of their kinetic energies.
Is work a scalar or a vector quantity?
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
Its moment of a force scalar or a vector quantity?
Name the type of energy possessed by a
(i) stretched catapult (ii) hot iron
(iii) wound up clock
Name the physical quantity associated with the 'rate of doing work'.
