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Questions
When we want to use a machine as a force multiplier, which class of lever should we preferably use? Give a simple diagram of such a lever.
To use a machine as a force multiplier, what class of lever should be preferred? Draw a sketch of such a lever.
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Solution
Though we can use either first class of lever or second class of lever, for multiplying force, we should preferably use a second class of lever. This is because the mechanical advantage of the second class of lever is always greater than one. A simple diagram of the second class of lever is shown alongside. The wheelbarrow, the bottle opener, and the mango cutter are some of the practical forms of the second class of lever.
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