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Question

A wheel barrow is an example of _________ .

A
1st order lever
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B
2nd order lever
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C
3rd order lever
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D
None
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Solution

The correct option is B 2nd order lever
Solution:
A wheel barrow is a second class lever :

1. The effort force is applied on one end, that force being the user pushing/pulling on the handle(s).
2. The load is in the center, being the bucket part that you fill with whatever you intend to move.
3. The fulcrum is on the other end, this is wheel that allows less force to be applied to lessen the work.

Hence B is the correct option

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