The body is performing uniform circular motion and moving with 10 m/s. Find the centripetal acceleration if radius is 40 cm and time is 4 s
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Explanation:
Answer
Correct option is
B
2.5π
2
cm/s
2
Answer is B.
The distance covered in completing the circle 2πr=2π×10cm.
The linear speed is v=2πr/t=
4s
2π×10cm
=5πcm/s
The acceleration is a=
r
v
2
=
10cm
(5πcm/s)
2
=2.5π
2
cm/s
2
.
Hence, the magnitude of its acceleration is =2.5π
2
cm/s
2
.
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