Physics · Simple Machines
If a simple machine has an efficiency of 80%, it means that:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The machine produces more energy output than the total input.
- 2The machine does not experience any losses in input energy.
- 3The machine wastes 20% of the input energy as heat or friction.✓
- 4The machine has a velocity ratio and mechanical advantage both equal to 80.
Correct answer
The machine wastes 20% of the input energy as heat or friction.
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