Day 81: A Counter-Intuitive, Newton’s Third Problem

2013-01-14 14.09.47

 

This is a fun problem to see if students can truly apply Newton’s Third Law, that Kelly shared in our weekly G+ hangout a while back. An awesome, counter-intuitive problem (which I poorly worded in haste on the board; I would now write “What happens to the ramp if the block is sliding down at a constant velocity?”).

Advertisements

2 Comments on “Day 81: A Counter-Intuitive, Newton’s Third Problem”

  1. Brian Vancil says:

    Constant in what reference frame? relative to the ramp?


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s