When a weight w is hung from one and of the wire other end being fixed, the elongation produced in it be 
If this wire goes over a pulley and two weights w each are hung at the two ends, the elongation of the wire will be
a)
b)
2
c)
d)
/2
When a weight w is hung from one and of the wire other end being fixed, the elongation produced in it be If this wire goes over a pulley and two weights w each are hung at the two ends, the elongation of the wire will be
a)
b)
2
c)
d)
/2
Question ID - 56181 | SaraNextGen Top Answer
When a weight w is hung from one and of the wire other end being fixed, the elongation produced in it be If this wire goes over a pulley and two weights w each are hung at the two ends, the elongation of the wire will be
a)
b)
2
c)
d)
/2
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When a weight w is hung from one and of the wire other end being fixed, the elongation produced in it be |
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a) |
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b) |
2 |
c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (c) -
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(c)
When wire goes over a pulley and weight w is attached each free ad end of wire, then the tension in the wire is doubled, but the original length of wire is reduced to half, so extension in the wire is
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= 
127 votes
Answer Link
127