Which simple machine multiplies SPEED rather than force?
AClass III lever
BClass II lever
CBlock and tackle
DSingle movable pulley
Answer & Solution
Correct answer: A. Class III lever
1. Class III levers have M.A. less than 1.
2. Effort must be larger than load.
3. But the load moves a larger distance than the effort.
4. This means a small movement of effort gives a large motion of load.
5. So Class III levers are speed multipliers, not force multipliers.
_Source: Selina Concise Physics ICSE Class 10, Ch 3 'Machines' (aplustopper.com extract)_
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