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4 years ago

A uniform plank of length 4.4m and weight 228N

Physics

1 answer:

lina2011 [118]4 years ago

4 0

Answer:0.558 m

Explanation:

Given

weight of Plank=228 N

weight of man=449 N

Length of plank=4.4 m

let $R_a$ and $R_b$ be the reactions at A & B

and Reaction at A becomes zero when plank is about to rotate at B

Taking moment about B at that instant so that plank is just about to rotate.

$228\times 1.1=449\times x$

Where x is the maximum distance that man can walk

x=0.558 m

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Explanation:

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3 years ago

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Answer:

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