1. Friction provides the force needed for a car to travel around a flat, circular race track. What is the maximum speed at which a car can safety travel if the radius of the track is 80.0 meters and the coefficient of friction is .40?
2. A rotating rod that is .153 meters long is spun with its axis through one end of the rod so that the other end of the rod has a speed of 2010 m/s. (4500 mph)
a. What is the centripetal acceleration of the end of the rod?
b. If you were to attach a 1.0 g object to the end of the rod, what force would be needed to hold it on the rod?
Please work me though these problems, im completely lost.
2. A rotating rod that is .153 meters long is spun with its axis through one end of the rod so that the other end of the rod has a speed of 2010 m/s. (4500 mph)
a. What is the centripetal acceleration of the end of the rod?
b. If you were to attach a 1.0 g object to the end of the rod, what force would be needed to hold it on the rod?
Please work me though these problems, im completely lost.
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μg provides the centripetal acceleration
v² /R = μg
v² = μg R = 0.4*9.8*80
v = 17.7 m/s
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2.
Assuming that the rod is mass less.
a = v² /R =
Substitute the value of v and r and find a
-----------------------------
The force is calculated using F = ma
--------------------------------------…
Unreasonable value of velocity is given.
Where from you got these types of question
===================
v² /R = μg
v² = μg R = 0.4*9.8*80
v = 17.7 m/s
================
2.
Assuming that the rod is mass less.
a = v² /R =
Substitute the value of v and r and find a
-----------------------------
The force is calculated using F = ma
--------------------------------------…
Unreasonable value of velocity is given.
Where from you got these types of question
===================