A) \[\frac{3}{4}k\]
B) \[\frac{4}{3}k\]
C) k
D) 4k
Correct Answer: B
Solution :
Spring constant \[k\propto \frac{1}{l}\] Therefore, \[\frac{{{k}_{2}}}{{{k}_{1}}}=\frac{{{l}_{1}}}{{{l}_{2}}}\] Given, \[{{l}_{1}}=l,\]\[{{l}_{2}}=3/4l,\] \[{{k}_{1}}=k\] \[\therefore \] \[\frac{{{k}_{2}}}{k}=\frac{l}{3/4l}\] or \[{{k}_{2}}=\frac{4}{3}k\]
You need to login to perform this action.
You will be redirected in
3 sec
