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1.When a pendulum is kept in a car which is sliding down, then
T= 2
[L / gcos 
] where is angle of inclination.
2.if a simple pendulum oscillates in a non-viscous liquid of density 
,then its time
period is T=2 [ L / ( 1 - / 
) ].
3.If the mass m attached to a spring oscillates in a non-viscous liquid of density ,
then its time period is given by T= 2 
[ m/k (1- / ) ].=density of mass
suspended
4.If the time period of one spring is T1, and that of second spring is T2, and if they are connected in series,then Tseries = T1 2 + T2 2 and if they are connected in
parallel Tparallel =T1 T2 / 
[T1 2 + T2 2 ].
5.In the case of a balanced wheel or torsional pendulum,
T=2 [ I / C ]. where I = moment of inertia, C=torsional constant=restoring
torque per unit length.
6. When a ball of mass m is made to oscillate in the neck of an air chamber having volume V and neck area A, then T=2 [ mV / pA2 ].
7. If a person sitting on an oscillating swing stands up , the time period of the swing decreases.
Comments (5)
see 4 any more if there and edit this to include additional inf.
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