Physics LAST QUESTION
posted by arcos15 .
A beetle whose mass is 2 g sits on a turntable at a distance of 12 cm from the center. The turntable is rotating at 33 rpm.
(a) What are its acceleration and the centripetal force on it?
a =______ m/s2
(b) What is the interaction that provides the centripetal force? Select all that apply.
-the gravitational force
-the force of friction
-the force of the beetle on the turntable
-the concentration of the mind of the beetle
At 33 rpm, the angular velocity is
w = 33*2*pi/60 = 3.46 rad/s
a = R*w^2, where R = 0.12 m
a = 1.43 m/s^2
Fc = M*a
Friction of the bug on the turntable provides the centripetalo force