FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the basic design of any machine
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friction
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how simple machines are combined
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the input distance always being less than the output distance
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Detailed explanation-1: -The ideal mechanical advantage of a machine reflects the increase or decrease in force there would be without friction. It is always greater than the actual mechanical advantage because all machines must overcome friction.
Detailed explanation-2: -The mechanical advantage of less than one means that the effort distance is greater than the load distance. Therefore, the meaning of mechanical advantage less than one is that the effort lies between the load and the fulcrum. The answer is Option (C): Effort between fulcrum and load.
Detailed explanation-3: -The mechanical advantage increases as the slope of the incline decreases. But the load will then have to be moved a greater distance. The ideal mechanical advantage (IMA) of an inclined plane is the length of the incline divided by the vertical rise, the so-called run-to-rise ratio.