Oh boy...I went somewhere, but I don't know if it was right. Here is what I did:
I used m*a=f-f(friction) and friction*radius = I*alpha. Alpha is equal to a*r, so I plugged that into make friction times radius = I*a*radius.
Plugging that into m*a=F-f(friction) i got...
One more problem on a tough worksheet...I have tried it for a while, but can't find an equation(s) suitable for the problem...
A constant force of 12N is applied to the axle of a disc rolling along a flat plane. The disc has mass m=22kg, diameter D=.50m, and rotational inertia I=.688kgm^2...
I used the equation v^2=Vo^2+2(a)(S-So) and solved for acceleration, then plugged in new value for initial velocity and used the found acceleration. Is this correct?
accel. = -16.3m/s^2
distance traveled @ 14 m/s = 6.01 m
A car is traveling at 7 m/s when the wheels are locked up. The car slides 1.5 meters before coming to rest. If the car had been moving at 14 m/s, how far would the car slide, assuming the same breaking force is used?
Not sure where to go with this problem...