A bicycle wheel with a radius of 30 cm and 16 spokes that is mounted with its axle fixed in a horizontal position. The number of spokes that pass close to an electronic eye are counted and registered on a computer. This meausre of the rate at which the wheel turns is used to observe the wheel's motion when a 50 g mass is hung from a string wrapped around the periphery of the tire. The wheel is held stationary with the weight hanging as shown and then released.
At t = 5.0s, The angular velocity is 10 spokes/second.
What is the angular Velocity (rad/s), and angular acceleration (rad/s^2)?

Question

A bicycle wheel with a radius of 30 cm and 16 spokes that is mounted with its axle fixed in a horizontal position. The number of spokes that pass close to an electronic eye are counted and registered on a computer. This meausre of the rate at which the wheel turns is used to observe the wheel's motion when a 50 g mass is hung from a string wrapped around the periphery of the tire. The wheel is held stationary with the weight hanging as shown and then released. 
At t = 5.0s, The angular velocity is 10 spokes/second.
What is the angular Velocity (rad/s), and angular acceleration (rad/s^2)?

anonymous · Answer

also What is the acceleration of the hanging mass in m/s^2 while the speed is increasing?

anonymous · Answer

Well lets draw it, 

|dw:1415268490536:dw| assuming your picture looks like this

anonymous · Answer

So we know 16 spokes make 2pi right? Can you figure out what the distance between each spoke is then. Hint: (2pi/16, simplify)
What is the formula for angular velocity? What are the forces acting on this wheel? (Remember Newton's first law)

anonymous · Answer

your awesome batman