Thursday

April 17, 2014

April 17, 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

**Related Questions**

Physics - a car is moving at 100 km/hr is 0.5 km behind another car moving at 60...

pre-algebra - thomas borrowed $4800 to buy a new car. he will be paying $96 each...

physics - Car moving down road accelerates at uniform rate 2.8 m/s/s for 4.63 s ...

Physics - Car A passes Car B on the highway. Rlative to car A's movement, Car B ...

physics..please help? - At rest, a car’s horn sound at the note A(440Hz) The ...

math - distance = rate x time or d = r*t car traveling 40 mi/hr goes 40 mi/hr x ...

physics - 2 cars are in a race the first car is 200m ahead of the second car.the...

Physics - Two cars approach each other from an initial distance of 2400 m. Car A...

math - Car B is 48km ahead of Car A. If Car Bis not moving and Car A is moving ...

Calculus - "Two cars are traveling along perpendicular roads, car A at 40mph, ...