Thursday

October 2, 2014

October 2, 2014

Posted by **Xochil** on Wednesday, May 23, 2012 at 9:41pm.

a) Find the angular speed of the wheels in radians per minute

b) Find the number of revolutions per minute the wheels are rotating.

- Pre-calc -
**Xochil**, Wednesday, May 23, 2012 at 10:26pmI shouldve known better than to actually think i was gunna get help...

- Pre-calc -
**Anonymous**, Wednesday, May 23, 2012 at 11:27pmV = linear speed

r = radius

omega = angular velocity

RPM = Revolutions per minute

r = diameter / 2

60 mph = 60 * 5280 ft

V = r * omega

60 * 5280 = ( 2.5 / 2 ) * omega

316,800 = 1.25 omega Divide both sides ba 1,25

316,800 / 1.25 = omega

253,440 = omega

omega = 253,440 radians / h Divide both sides by 60

omega = 253,440/ 60

omega = 4,224 radians / min

1 rotation = 2 pi radians

RPM = 4,224 / 2 pi

RPM = 2112/ pi

RPM = 2112 / 3.1416

RPM = 672.2689 rotation / min

**Answer this Question**

**Related Questions**

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

Algebra 1 - A car travels on a highway at an average speed of 65 miles per hour...

algebra 1 - What is the speed, in miles per hour, of a toy car that runs 40 ...

MATH - HOW LONG WILL IT TAKE A CAR BEING DRIVEN AT A SPEED OF 15 MILES PER HOUR ...

physics - The speed in air is 343m/s. Using the relationships3.3 feet in a meter...

Math - A car is moving at a rate of 60 miles per hour. the diameter of the ...

biotech college - What is 29 miles per hour in units of m/s? 1 mile is 5280 ...

math - convert 60 miles per hour to feet per second. (Hint: there are 5280 feet ...

Physic Check - These are questions I'm unsure about out of 20 for my submission...

math - michael walks at a rate of 6 feet per second.which is the closest to this...