Oscillations - Result Question 37

41. A spring of force constant k is cut into lengths of ratio 1:2:3. They are connected in series and the new force constant is k. Then they are connected in parallel and force constant is k. Then k:k is

(a) 1:9

(b) 1:11

(c) 1:14

(d) 1:6

[2017]

Show Answer

Answer:

Correct Answer: 41. (b)

Solution:

  1. (b) Let be the complete length of the spring. Length when cut in ratio, 1:2:3 are

6,3 and 2

Spring constant (k)1 length ()

Spring constant for given segments

k1=6k,k2=3k and k3=2k



NCERT Chapter Video Solution

Dual Pane