1
Two masses MA and MB are hung from two strings of length lA and lB respectively. They are executing SHM with frequency relation fA = 2fB, then relation
- lA = lB4, does not depend on mass
- lA = 4lB, does not depend on mass
- lA = 2lB and MA = 2MB
- lA = lB2 and MA = MB2
Answer
(1) lA = lB4, does not depend on mass
Solution
For a simple pendulum, f = 12 gl, which does not depend on the mass of the bob.
fAfB = lBlA
2 = lBlA
lA = lB4 (independent of mass)
Answer: (1)
AIPMT 2000