A mass m is suspended separately by two different springs of spring constant K1 and K2 gives the time-period t1 and t2 respectively. If same mass m is connected by both springs as shown in figure then time-period t is given by the relation
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a
t=t1+t2
b
t=t1.t2t1+t2
c
t2=t12+t22
d
t−2=t1−2+t2−2
answer is D.
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Detailed Solution
t1=2πmK1 and t2=2πmK2Equivalent spring constant for shown combination is K1 + K2. So time period t is given by t=2πmK1+K2By solving these equations we get t−2=t1−2+t2−2