Extension, is this an action or a by-product of a good upstream movement

Welcome to Discuss Fastpitch

Your FREE Account is waiting to the Best Softball Community on the Web.

Jun 8, 2016
16,118
113
At the 2:20-ish mark he speaks of centrifugal as going off as a tangent. I don’t typically consider that to be centrifugal force, but inertial force.

Same thing..and it only exists when measured/viewed in a rotating frame of reference
 
Apr 20, 2018
4,581
113
SoCal
"Please clarify. Are you stating that centrifugal force is the same as inertial force?

In a significant way, yes.

Linear inertia, in an inertial frame, is the physics from which centrifugal force arises, in a rotating frame. At a minimum, I think most folks would consider it fair to say that they are two different expressions of the same phenomenon.

Further, I personally, and probably many other students of physics, would not fault you if you called them “the same thing”. But there are certainly pedantic and valid arguments that they are not the same thing. A bit of a philosophical question.
 
Apr 20, 2018
4,581
113
SoCal
OR my other answer:

Not even close.

Inertia is a tendency to keep doing whatever an object is doing. The relevant variable is mass. Inertia works to keep things going in straight lines.

Centrifugal force as a force (such as gravity) that pulls towards the central point to create circular motion.

There is rotational inertia, which is the tendency of spinning things to keep spinning. That relies on something called the moment of inertia - the circular motion version of mass. Moment of inertia depends on mass, the shape of the object and the axis it’s rota
 
Jun 17, 2009
15,105
0
Portland, OR
Further clarification please ...

I tend to think of centrifugal force as being in the opposite direction as centripetal force ... 180 degrees different. I tend to think of inertial force as being tangential to the circular path of the object being rotated ... or 90-degrees different than the centripetal force. Correct or incorrect?
 
Apr 20, 2018
4,581
113
SoCal
I have no idea. Those were two answers I found on line. I will stick to see the ball , hit the ball. LOL

But a real question: Does a hitter pull her hands in (like a ice skater) to speed up rotation and then release their hands like being thrown off the merry go round?
 

Forum statistics

Threads
42,830
Messages
679,475
Members
21,445
Latest member
Bmac81802
Top