Posted by **eric** on Tuesday, March 30, 2010 at 5:38pm.

As a result of friction, the angular speed of a wheel changes with time according to

dθ/dt = ω0 *e^-(σ*t)

where ω0 and σ are constants. The angular

speed changes from an initial angular speed of 3.08 rad/s to 1.58 rad/s in 3.92 s.

a)Determine the magnitude of the angular acceleration after 2.39 s. Answer in units of rad/s2.

b)How many revolutions does the wheel make after 1.9 s ?

c) Find the number of revolutions it makes before coming to rest.

help on any of these problems would be thankful

## Answer This Question

## Related Questions

- college physics (inertia) - As a result of friction, the angular speed of a ...
- college physics (inertia) - As a result of friction, the angular speed of a ...
- physics - As a result of friction, the angular speed of a wheel changes with ...
- Physics - A spherical shell of radius R carries a uniform surface charge density...
- Physics - A spherical shell of radius R carries a uniform surface charge density...
- Calculus question - It looks very complicated and I do not know how to even ...
- Physics (Rotation) - In Fig. 10-28, wheel A of radius rA is coupled by belt B to...
- Differential Equations - The boundary value problem Ty"+ ρ(ω^2)y' = 0...
- Physics - A ruler stands vertically against a wall. It is given a tiny impulse ...
- Physics Classical Mechanics - A solid disk 1 with radius R1 is spinning freely ...

More Related Questions