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If a load of 9 kg is suspended on a wire...

If a load of 9 kg is suspended on a wire, the increase in length is `4.5` mm. the force constant of the wire is

A

`0.49xx10^(4)" N/m"`

B

`1.96xx10^(4)" N/m"`

C

`4.9xx10^(4)" N/m"`

D

`0.196xx10^(4)" N/m"`

Text Solution

Verified by Experts

The correct Answer is:
B
`F=kxrArrk=(F)/(x)`
`k=(9xx9.8)/(4.5xx10^(-3))=11.96xx10^(4)" N/m"`
`=1.96xx10^(4)" N/m"`
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CENGAGE PHYSICS-ELASTICITY-MANDATORY EXERCISE (Exercise Set II) Multiple - Choice Questions with One correct Answer
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