KinematicsHard
Question
A stone tied to the end of string 80 cm long whirled a horizontal circle a constant tangential acceleration. If the stone makes 14 revolutions in 25 s, the magnitude of acceleration is :
Options
A.20 ms-2
B.12 m/s
C.9.9 ms-2
D.8 ms-2
Solution
ω = 
∴ magnitude of acceleration
= ω2r =
= 9.9 m/s2
∴ magnitude of acceleration
= ω2r =
= 9.9 m/s2 Create a free account to view solution
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