A object moves counter-clockwise along the circular path shown. As it moves along the path, its acceleration vector continuously points towards point $O$ . In the figure, line $A B$ is a diameter.

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The object has minimum speed at A and maximum speed at B

The object has maximum speed at A and minimum speed at B

The object slows down from A to B and speeds up from B to A

The object speeds up from A to B and slows down from B to A

answer is B, C.

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Detailed Solution

At points A and B tangential acceleration of the particle is zero .As the particle is moving from B to A , its tangential acceleration gradually increases from zero to a maximum and again decreases to zero . As a result speed of the particle gradually increases as it moves from B to A .

When the particle moves from A to B ,its tangential acceleration opposes its velocity , as a result speed of the particle gradually decreases and becomes minimum at B.

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