Discuss the maximum and minimum values of displacement, velocity and acceleration of particle
performing linear S.H.M.
Answers
Explanation:
1)
Such errors are almost unavoidable but can be minimized considerably as follows: Readings must be taken by adjusting the standard known resistance such that the null point is obtained close to the centre of the wire. When several readings are to be taken, the null points should lie in the middle one-third of the wire.
Two possible sources of errors in meter-bridge experiment are:
1.Error due to sliding of jockey on the wire:Due to sliding of the jockey, heat is produced due to friction.Thus, the area of wire can be deformed and resistance of the wire may change.
To minimise this error,jockey is tapped on the wire.
2.Error due to heating effect of the cell current:Heating effect of the wire leads to thermal expansion in the wire.Due to thermal expansion, resistance of wire increases.
To minimise this error,circuit is switched off after every reading.
2)
Comparing this equation to v = vmax cos (ωt + φ), results in the value of maximum speed in SHM, simply vmax = Aω. It was discussed that vmax occurs at the middle (x = 0) as the oscillating object passes the equilibrium position.
3))
The key K
1
R
=
100−l
1
l
1
So, S=
l
1
(100−l
1
)×R
As R is known values so unknown resistance S can be calculated.
4))
