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प्रश्न
When is work said to be done by a force?
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उत्तर
Work is said to be done when a force moves an object through a distance in its own direction.
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संबंधित प्रश्न
Name six simple machines. Give an example of each machine.
Define the term ‘work input’ and ‘work output’ in relation to a machine.
Define Simple machine
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Establish a relationship between efficiency, M.A., and V.R.
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
Classify the following as a lever, a pulley and an inclined plane:
An opener
Classify the following as a lever, a pulley and an inclined plane:
A knife
Why is this so traveller’s bags have wheels?
The idea of a simple machine originated with the Greek philosopher Archimedes.
