A machine is a device which can either overcome a large resistive force (or load) at some point by applying a small force (or effort) or by which we can obtain a gain in speed.

True

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False

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Solution

The correct option is A
True

A machine is any device that reduces the effort needed or it gives a gain in speed. For. e.g. A jack is used to lift a car weighing almost around 1500 kg or an engine also a machine that can run a car up to 150 km/hr.

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The resistive or opposing force to be overcome by a machine is called

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L_{d}

E

E_{d}

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