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there are fewer contact points between the surfaces in which causes the force of friction to be reduced.
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∙ 14y ago
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The mechanical what of a machine compares the input force with the output force?
Mechanical efficiency
What quantity measures the output force of a machine relative to the input force?
Efficiency.
Reducing friction in a machine increases or decreases?
Deceasing friction increases efficiency and reduces heat loss.
What does the output force divided by the input force equal?
Efficiency of a machine or mechanical advantage
Does a machine with an efficiency of 1.2 requires a smaller effort force than a machine that has an efficiency of 2.2?
Efficiency is a measure of power losses. A machine with an efficiency of say 85% or 0.85, experiences 15% power losses from input to output (as heat through friction) This would be typical for say a car, comparing crankshaft power to power at the drive wheels. No machine will exceed 100% efficiency > Work done = force * distance Efficiency = work done at output / work done at input > Mechanical Advantage (leverage) is distance moved by input / distance moved by output. Output force = input force * Mechanical Advantage
Which force reduces the efficiency of machine?
Friction.
What does a machine increase when it reduces force?
Speed.
What is efficiency of a simple machine?
Efficiency % = (work out / work in) * 100 (Work = force * distance)
What is the efficiency of a simple machine?
Efficiency % = (work out / work in) * 100 (Work = force * distance)
The mechanical what of a machine compares the input force with the output force?
Mechanical efficiency
What quantity measures the output force of a machine relative to the input force?
Efficiency.
How the efficiency of a ideal machine compares with the efficiency of a real machine?
In an ideal frictionless system, the work input equals the output and force. Your Welcome!!!
Reducing friction in a machine increases or decreases?
Deceasing friction increases efficiency and reduces heat loss.
What does the output force divided by the input force equal?
Efficiency of a machine or mechanical advantage
What machine reduces the force you need to apply to a bicycle to keep it moving?
The lever.
The ratio of output force to input force for a simple machine is called its advantage?
The answer is mechanical advantage, not efficiency!
What is a comparison of a machine's work input and work output force?
Mechanical efficiency
