Wednesday

January 28, 2015

January 28, 2015

Posted by **marie darling** on Friday, March 15, 2013 at 10:09pm.

Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes: __rad/min

How many revolutions per minute do the wheels make?__ rpm

- trigonometry -
**Reiny**, Friday, March 15, 2013 at 10:32pmradius of wheel = 24 inches

one rotation = 2π(24) = 48π inches

in 1 hour it goes 55 miles

= 55x5280x12 inches

= 3484800 inches

number of rotations per hour

= 3484800/(48π) = 23109.29774 rotations per hour

= 385.155 rpm

= 385.155x(2π) radians /min

= 2420 radians/min

check my arithmetic

**Answer this Question**

**Related Questions**

Math - A truck with 36-in.-diameter wheels is traveling at 55 mi/h. Find the ...

trigonometry - A truck with 48-in.-diameter wheels is traveling at 45 mi/h. (a) ...

Math - A truck with 40-in.-diameter wheels is traveling at 50 mi/h. a) Find the ...

Trigonometry - The wheels of a scooter have a diameter of 4.5 inches. If the ...

physics - An automobile traveling 80 mi/hr has wheels 31 inches in diameter. If ...

Trignometry - A car is moving at a rate of 55 mph and the diameter of its wheels...

chemistry - a car covers a distance of 200 mile in 3 hours. How many kilometers ...

trigonometry - The minute hand of a clock is 8 inches long. How far does the tip...

physics - A bicycle has wheels 67.3 cm in diameter and pedal cranks 17.5 cm long...

physics - What is the angular speed in rev/min of the Earth as it orbits around ...