Homework Help: physics

Posted by Sandhya on Tuesday, December 2, 2008 at 5:08am.

A bicycle with wheels of 70.0 cm diameter is going at a speed of 12.0 m/s.How fast is a point on the rim at the top of one of the wheels moving relative to the ground?

physics - drwls, Tuesday, December 2, 2008 at 5:17am
The angular velocity of the wheel is
w = V/R = 12.0/0.700 = 17.14 rad/s

Because the contact point of the wheel with the road is an "instant center" of rotation, a point at the top of the wheel moves at a velocity 2 w = 2 R * (V/R) = 2 V = 24 m/s.
physics - Sandhya, Tuesday, December 2, 2008 at 5:35am
Thanks for your quick response

Answer this Question

Related Questions

physics - A bicycle has wheels 67.3 cm in diameter and pedal cranks 17.5 cm long...
physics - A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr. ...
physics - If the rotational speed of each wheel is 9 revolution per second, what...
physics - If the rotational speed of each wheel is 9 revolution per second, what...
PHYSICS HELP - Back in the stage coach era, iron rims were placed on wooden ...
physics - A bicycle wheel has a diameter of 64.2 cm and a mass of 1.79 kg. ...
physics - A bicycle has wheels with a diameter of 0.630 m. It accelerates ...
physic - A bicycle with 55.20 cm diameter wheels is traveling at 23.60 km/hr. At...
physics - A bicycle wheel has a diameter of 57.7 cm and a mass of 2.66 kg. The ...
Physics - I need help with solving these word problems. Marion rides her racing...

For Further Reading

First Name:
School Subject:
Answer: