+0

# Angular and Linear Motion

0
102
1
+766

The radius of a car wheel is 13 inches. How many revolutions per minute is the wheel making when the car is traveling at 40 mph?

#1
+1

Convert 40 mph to inces per minute.

40 x 5,280 feet x 12 inches / 60 minutes =42,240 inches per minute

Circumference =Radius x 2 x Pi

C = 13 x 2 x 3.141592

C=81.68 inches - circumference of the wheel.

42,240 / 81.68 =517.14 ~ 517 - revolutions per minute.

Guest Jan 16, 2018
Sort:

#1
+1

Convert 40 mph to inces per minute.

40 x 5,280 feet x 12 inches / 60 minutes =42,240 inches per minute

Circumference =Radius x 2 x Pi

C = 13 x 2 x 3.141592

C=81.68 inches - circumference of the wheel.

42,240 / 81.68 =517.14 ~ 517 - revolutions per minute.

Guest Jan 16, 2018

### 39 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details