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Home >All Categories > Science & Mathematics >Physics >Open Question Anthony Member since:September 24, 2009Total points:100 (Level 1)PLEASE HELP!!!!!!
A car initially traveling at 32.4 m/s undergoes a constant negative acceleration of magnitude 1.90 m/s2 after its brakes are applied.
(a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m?.....in rev
(b) What is the angular speed of the wheels when the car has traveled half the total distance?
in rads/sAnswer Question

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We have:
x = cos(t)
y=sin(t)
z=5t

Deduce the acceleration along the trajectory

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Home >All Categories > Science & Mathematics >Physics >Open Question Scott T Member since:March 29, 2011Total points:85 (Level 1)A frictionless pulley, which can be modeled as a 0.80kg solid cylinder with a 0.35m radius, has a rope going over it.
The tensions in the rope are 12 N and 10 N. What is the angular acceleration of the pulley?Answer Question

by Kunal Grover Member since:May 21, 2010Total points:122 (Level 1)Diff in Torques due to tensions cause angular acc
T1*r-T2*r=(Moment of inertia)*Angular acc
Moment of inertia for solid cyl=M*r*r/2
Ans=10/7 rad/s

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