A particle of mass m is released from rest

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A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small which graph correctly depicts the position of the particles as a function of time ?

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Answer:

The correct answer is D.

which is given in the attached image below.

Explanation:

In the graph given above, the object follows a parabolic path. Also, the objects started moving from its mean position. Hence, the starting displacement has to be zero.

In the options, a and b the initial displacement is not equal to zero. Hence, these two options are incorrect. Now, since the object follows a parabolic path the graph has to be a cosine graph.


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