Home Physics Work, Energy, Power and Collision Mix A wire is clamped horizontally between two r…
Physics Work, Energy, Power and Collision Mix MCQ (Single Correct)

A wire is clamped horizontally between two rigid support and a small mass is hanged from middle of the wire. The mass is displaced a little in vertical direction -

A
Mass will undergo S.H.M for all value of 'x' (large or small)
B
Mass will not undergo S.H.M for any value of 'x' (large or small)
C
mass will undergo S.H.M. only if value of 'x' is very small
D
Mass will undergo periodic motion

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The correct answer is:
CHECK THE SOLUTION.

(b, d)

Let 'x' be the displacement from mean position 'P' shown in figure.

Restoring force = 2T sin θ

2.K.x sin 2 θ

= 2.K.

Thus restoring force α x 3 .

Hence mass will not undergo S.H.M. but it will undergo periodic motion.

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