Solve the problem.
-A wheel is rotating at 4 radians per sec, and the wheel has a 96-inch diameter. To the nearest foot per minute, what is the speed of a point on the rim?
A)950 ft per min
B)960 ft per min
C)955 ft per min
D)965 ft per min

Question

Quizplus · Accepted Answer

The speed of a point on the rim can be found by multiplying the angular speed by the radius of the wheel. The radius is half the diameter, so it's 96/2 = 48 inches. The speed in inches per minute is 4 radians/sec * 48 inches * 60 sec/min = 11520 inches per minute. Converting to feet (11520 inches / 12 inches/foot) gives 960 feet per minute.

Solve the Problem. -A Wheel Is Rotating at 4 Radians Per Sec, and Per