Physics Elasticity Question 104
Question: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
Options:
A) $ 0.49\times 10^{4},N/m $
B) $ 1.96\times 10^{4},N/m $
C) $ 4.9\times 10^{4},N/m $
D) $ 0.196\times 10^{4},N/m $
Show Answer
Answer:
Correct Answer: B
Solution:
$ F=Kx\Rightarrow K=\frac{F}{x}=\frac{9\times 9.8}{4.5\times {{10}^{-3}}}=1.96\times 10^{4}N/m $
BETA
