A 100 g block is connected to a horizontal massless spring of force constant 25.6 N/m. As…
Physics · JEE Advanced · NTA Exams — Oscillations and Waves
A 100 g block is connected to a horizontal massless spring of force constant 25.6 N/m. As shown in figure (a ), the block is free to oscillate on a horizontal frictionless surface. The block is displaced 3 cm from the equilibrium position and, at t = 0, it is released from rest at x= 0 . It executes simple harmonic motion with the positive x-direction indicated in figure (a ).
The position-time(x-t) graph of motion of the block is as shown in figure ( b).
\[\text { (a) }\]
When the block is at position C on the graph, its
- velocity is maximum, and acceleration is zero
- velocity is minimum, and acceleration is zero
- velocity is zero and acceleration is negative
- velocity is zero and acceleration is positive
Answer
(C) velocity is zero and acceleration is negative
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