Homework Answers
SOLUTION :
Only one question is answered as per rule of Chegg’s :
Q3.
3 turns in 24 sec.
=> 1 turn in 8 sec.
Distance covered in 1 turn in 8 sec. = 2 * pi * r = 2 * pi * 12 = 75.4 m
So,
Bird’s speed = distance/time = 75.4/8 = 9.4248 = 9.42 m/s (ANSWER).
Centripetal acceleration magnitude = v^2/r = (9.4248)^2/12 = 7.40 m/s^2 (ANSWER).
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