Question

The horizontal turntable shown rotates at a constant speed. As viewed from above, a coin on the turntable moves counterclockwise in a circle as shown. monotot lo 90101 od loobulingsm bonosib Sketch this on your whiteboard. On you sketch GUD SO e draw and label a straight arrow to represent the velocity of the coin at this instant; ✓ • draw and label a straight arrow to represent the acceleration of the coin at this instant; V • draw and label a straight arrow to represent the net force on the coin at this instant. View from Above MOOD W 6w da i nho What for What force is causing this coin to change direction 1291 • Draw a free body diagram of the coin. Pra nosot If the turntable is spinning at one revolution every 5 seconds, and the coin is 20 centimeters from the center, and the coin has a mass of 3 grams: Calculate the centripetal acceleration of the coin. onom o . How big is the force of static miction that is causing the centripetal acceleration?
a coin on a turntable at constant speed: please show me how to solve the unchecked answers and include the steps so I can learn!

Answer 1

.con Focya Gren - Distance of coin from Ceabe CRJ = 20CM = 0.20m mass of con (m)=3 qm=0.003 kg spud N) = 1 perlain 5 seconds Time period (T) = 58. We know that in circular motion centripetal force is responsible for changing the direction of the circulating body. Actually the centripetal force changes the direction of a centripetal acceleration Velocity without changing f→ centripetal force the magnitude of velocity so Centre petal force is respensible for changing the dirution of the coin Free Body diagram of the con Autre) & Frictional con F I force (fs) 60 top-mv2 (centripetul pere) I now centripetal acceleraten we know that, W=qTN, when 'N'ú a=r002 (0.20)(271)2 la=0.3158M/42 And In revolutions per minute I now centripetal force But here Revolutions per F=mruz=0003x(0:3150) selend = N as it complet F = 0.0009475N] I revin seconds so I This centripetal force will be N = 13 revis. balanced by frietion force W = gtx 1060=217 so, static friction force [Fs = f = 0.0009475N) 1' waath padle 60 5 Ans.