Single movable pulley has ideal mechanical advantage of:
A1
B3
C2
D4
Answer & Solution
Correct answer: C. 2
1. The load hangs from the movable pulley.
2. Two strings support the load.
3. Each string carries half the load.
4. So the effort is half the load and M.A. = 2.
_Source: Selina Concise Physics ICSE Class 10, Ch 3 'Machines' (aplustopper.com extract)_
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