If there is no friction on a pulley, then the MA will always be less than the VR.Question 18Answera.Falseb.True
Question
If there is no friction on a pulley, then the MA will always be less than the VR.
Question 18
Answer
- a. False
- b. True
Solution
The statement is false.
In an ideal machine where there is no friction, the Mechanical Advantage (MA) is equal to the Velocity Ratio (VR). This is because all the input work is converted into output work without any losses due to friction.
Mechanical Advantage is the ratio of the output force to the input force in a machine, while Velocity Ratio is the ratio of the distance moved by the effort to the distance moved by the load in a machine.
So, if there is no friction on a pulley, the MA will not be less than the VR, it will be equal to the VR. The correct answer is a. False.
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