1-4 An automobile with 0.270 m radius tires travels 65,000 km before wearing the
ID: 1793479 • Letter: 1
Question
1-4An automobile with 0.270 m radius tires travels 65,000 km before wearing them out. How many revolutions do the tires make, neglecting any backing up and any change in radius due to wear? Additional Materials Reading In lacrosse, a bal is thrown from a net on the end of a stick by rotating the stick and forearm about the elbow. If the angular velocity of the ball about the elbow joint is 25.0 rad/s and the ball is 1.05 m from the elbow joint, what is the velocity (in m/s) of the ball? m/s Additional Materials Reading A truck with 0.820 m radius tires travels at 25.0 m/s. At how many radians per second are the tires rotating? What is this in rpm? Additional Materials Reading A fairgrounds ride spins its occupants inside a flying saucer-shaped container. If the horizontal circular path the riders follow has a 9.00 m radius, at how many revolutions per minute will the riders be subjected to a centripetal acceleration whose magnitude is 2.20 times that due to gravity? rev/min Reading
Explanation / Answer
ACCORDING TO THE CHEGG GUIDELINES I AM ALLOWED TO ANSWER ONLY (FIRST ) ONE QUESTION AT A TIME.
1) c = 2 * 3.14 * r = 2 * 3.14 * 0.270 m = 1.6956 m
Revolutions = 65000 * 10 ^ 3 m / 1.6956 m = 38334512.86 rev ===================ANSWER)
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