A) 9:1
B) 1:6
C) 3:1
D) 1:3
Correct Answer: A
Solution :
[a] For a given spring, \[\operatorname{u} =\frac{1}{2} k{{x}^{2}}\] \[\therefore \frac{{{\operatorname{u}}_{2}}}{{{u}_{1}}} =\frac{\frac{1}{2} k{{x}_{2}}^{2}}{\frac{1}{2} k{{x}_{1}}^{2}}=\frac{{{\left( 3x \right)}^{2}}}{{{x}^{2}}}=9:1\]
You need to login to perform this action.
You will be redirected in
3 sec
