A wheel rotates about a fixed axis with a constant angular ...

[Sufayan.ah]

A wheel rotates about a fixed axis with a constant angular acceleration of 4.0 rad/s2 . The diameter of the wheel is 40 cm. What is the linear speed of a point on the rim of this wheel at an instant when that point has a total linear acceleration with a magnitude of 1.2 m/s2?
 a. 39 cm/s
  b. 42 cm/s
  c. 45 cm/s
  d. 35 cm/s
  e. 53 cm/s

Question 2

A wheel rotating about a fixed axis with a constant angular acceleration of 2.0 rad/s2 starts from rest at t = 0 . The wheel has a diameter of 20 cm. What is the magnitude of the total linear acceleration of a point on the outer edge of the wheel at t = 0.60 s?
 a. 0.24 m/s2
  b. 0.50 m/s2
  c. 0.14 m/s2
  d. 0.34 m/s2
  e. 0.20 m/s2

[aliotak]

Answer to Question 1

B

Answer to Question 2

A

[Sufayan.ah]

Thank you!

[aliotak]

Always glad to help...