A car enters a level, unbanked semi-circular hairpin turn of 300 m radius at a speed of 40 m/s. The coefficient of friction between the tires and the road is ? = 0.25 . If the car maintains a constant speed of 40 m/s, it will
a. attempt to dig into the road surface.
b. tend to veer toward the center of the semicircle.
c. arrive safely at the end of the semicircle.
d. tend to veer toward the outside of the circle.
e. veer toward the center for the first quarter-circle, then veer toward the outside for the second quarter-circle.
d
You might also like to view...
Precession of Earth's axis causes the date at which perihelion of Earth's orbit occurs to slowly change
Indicate whether the statement is true or false
The grooves and ridges on Ganymede are thought to
A) be due to the moon's rapid rotation. B) have grown considerably larger since the Voyager spacecraft discovered them. C) be part of an ongoing volcanic process. D) be due to crustal tectonics motion (plate tectonics). E) have formed within the last thousand years.
The Maunder Minimum refers to a period of sustained solar ________ from 1645 until about 1715
Fill in the blank(s) with correct word
A limitation of all electric automobiles is
A. Low energy density per battery. B. Batteries explode more readily than gasoline. C. Electric energy is not useful for autos. D. Electric motors are less efficient than gasoline motors.