Question

What is the centripetal acceleration of a bug sitting 10 cm from the center of a record and moving at 42 cm/s? Select one: O a. 0 m/s O b. 17.5m/s c. 4.2 m/s2 O d. 1.75 m/s PREVIOUS pAGE

Answer 1

Let the radius of the record is r= 10 cm = 0.1m

Linear velocity of the bug V= 42 cm/s= 0.42 m/s

Then the centripetal acceleration can be written as

acceleration (a) = $V^2/r$

a= $0.42^2/0.1$

a=1.764 m/s^2

This is the centripetal acceleration of the bug

Hence d is correct answer