Force

F=ma

It’s a little thing for a newspaper, but it did take two thousand years for physicists to figure it out, that is, that forces act only in straight lines.

The diagram is from an article on GM’s failure to recall cars with a dangerous defect, responsible for at least 13 deaths, that unexpectedly turned the ignition off.

I suppose the weight of the key ring, shown as a vertical force vector, causes the key to rotate in the lock, but the motion is rotational, not the force.

Advertisements

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

%d bloggers like this: