alleryStart learning →What does a simple machine do for its operator?
AIt creates extra energy for the operator
BIt multiplies the force we apply to it
CIt removes friction from a moving system
DIt converts heat into rotational motion
Answer & Solution
Correct answer: B. It multiplies the force we apply to it
1. Levers, gears, pulleys, wedges and screws are all simple machines.
2. Each multiplies or augments the force applied to it, usually at the cost of a longer distance moved.
3. Energy is still conserved, so a machine cannot do more work than the energy put into it.
4. Creating extra energy is therefore impossible, which rules that option out at once.
_Source: OpenStax College Physics (CC BY 4.0), Ch 9 "Statics and Torque", section 9.5 Simple Machines_
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