Phil stands at rest with both feet on a scale that reads 500 N. ...

[gonzo233]

Phil stands at rest with both feet on a scale that reads 500 N. After he gently lifts one foot, the scale reads
 
  A) less than 500 N.
  B) 500 N.
  C) more than 500 N.

Question 2

A bicycle wheel has an initial angular speed of 7.2 rad/s. After turning through of a revolution, the angular speed is reduced to 2.2 rad/s.
 
  If the angular acceleration of the wheel was constant during the motion, how long will it take the wheel to make the revolution?

[adammoses97]

Answer to Question 1

Answer: B

Answer to Question 2

0.67 s

[gonzo233]

Thank you!

[adammoses97]

Always glad to help...