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प्रश्न
Why does a spanner have a long handle?
Why does a spanner (or wrench) have a long handle?
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उत्तर
A long handle facilitates increased torque with a small application of force; hence, a spanner has a long handle.
संबंधित प्रश्न
Explain briefly why the work done by a fielder when he takes a catch in a cricket match is negative.
When does a force perform work?
.A man raises a box of mass 50kg to a height of 2m in 20s, while another man raises the same box to the same height in 50s. Compare:
(i) the work done, and
(ii) the power developed by them.
State two advantage of producing hydroelectricity.
Explain degradation of energy by taking two examples of your daily life.
Give one example in which a force does zero work.
What is the ratio of SI units to CGS units of 'work'?
State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.
What is work?
State whether work is done or not, by writing yes or no, in the following case:
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