A block is moving counter-clockwise in a circular path on a flat horizontal table. If the speed of the block is increasing at the moment it is at the position shown. Find out the direction of the acceleration on the block?
A
A
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B
B
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C
C
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D
D
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E
E
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Solution
The correct option is BB Centripetal acceleration (ar) always points in the direction towards the centre of the circular motion.
As the speed of the block increases, thus the tangential acceleration (at) is positive and hence points in the direction of velocity.
Thus the net acceleration (a) points in the direction as shown in the figure i.e the direction of B.