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Question

A cable that can support a load W is cut into two equal parts. The maximum load that can be supported by either part is


A
W
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B
W2
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C
W4
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D
2W
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Solution

The correct option is A W

When the cable is cut into two equal parts, then maximum load that can be supported by either parts of the cable remain the same as before. Since,

Breakingstress=FA

Where, F is the force and A is the area of cross section.

Breaking is independent of length of cable. So, load remains the same when a load W is cut.

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