+0  
 
0
902
2
avatar

A water wheel with diameter 3 m is used to measure the approximate speed of the water in a river. If the angular velocity of the wheel is 15 rpm, what is the speed of the river, in kilometres per hour?

Guest May 12, 2015

Best Answer 

 #1
avatar+27044 
+15

linear velocity = circumferential distance*number of revolutions per minute so:

linear velocity = 15*pi*3 metres/minute = (15*pi*3/1000)*60 km/hour

 

You can crunch the numbers.

.

Alan  May 12, 2015
 #1
avatar+27044 
+15
Best Answer

linear velocity = circumferential distance*number of revolutions per minute so:

linear velocity = 15*pi*3 metres/minute = (15*pi*3/1000)*60 km/hour

 

You can crunch the numbers.

.

Alan  May 12, 2015
 #2
avatar+93656 
0

Thanks Alan,

This would be a really nice one for Zac (or somene else) to explain in detail.

Where is Zac when we need him. Any other takers?  LOL

Melody  May 12, 2015

5 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.