A 3.0 g coin rotates on a record turntable as shown below. WARNING: Figure may h

Question

A 3.0 g coin rotates on a record turntable as shown below. WARNING: Figure may have a different radius than you are given for this problem: The coin remains 17cm from the center during the motion. If the turntable maintains a speed of 2.7 rad/s, what is the magnitude of the coin's linear acceleration? Careful with units!

m/s2

What is the force of friction on the coin?
Newtons in the direction   ---Select--- opposite direction of the linear velocity towards the center of the turntable parallel to the linear velocity away from the center of the turntable

Explanation / Answer

radial acceleration, ar = w^2 r

ar = (2.7^2)(0.17)

a = 1.24 m/s^2 ...........Ans

F = m a = (3 x 10^-3 kg) (1.24 m/s^2 )

F = 3.72 x 10^-3 N .......Ans

Direction-> towards the center of the turnable

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.