Mechanical advantage is the ratio of load to:
ALength
BEffort
CWeight
DHeight
Answer & Solution
Correct answer: B. Effort
1. A machine changes the size of the force you must apply.
2. The applied force is called the effort.
3. Mechanical advantage is the ratio of the load to the effort.
4. So the answer is effort.
_Source: NCERT Class 9 Science, Ch 7 'Work, Energy, and Simple Machines'_
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