# Calculating Baseball Swing Force

• Physics1
In summary, the high acceleration and force exerted by Sammy Sosa and the wood chopper are a result of the short contact time between the bat/axe and the ball/tree, rather than a continuous force being applied.

#### Physics1

Sammy Sosa swings at a 0.15kg baseball and accelerates it at a rate of 3.0 x10^4 m/s^2. How much force does Sosa exert on the ball?

F=ma

(30000m/s^2)(0.15kg) = 4500 N

Can someone make sense out of these problems? How is it accelerating at that rate? I've seen car crashing problems not even get that much higher force. Sosa can hit a car and get a home run. LOL

Can anyone explain it? I'm assuming all the problems in the packet come to realistic answers.

Physics1 said:
Can someone make sense out of these problems? How is it accelerating at that rate?
The time of contact of bat with ball is very short--so force and acceleration are high.
I've seen car crashing problems not even get that much higher force. Sosa can hit a car and get a home run.
A car has quite a bit more mass than a baseball. (And is not as bouncy.)

Here's another problem...

An ax has a mass of 2.5kg and is swinging at 25m/s.
A man chops a tree and the ax stops at 2.3cm in the tree.

(vf^2 - vi^2)/2d = a

625m/s / 0.046m = 13000m/s^2

F=ma
(13000m/s^2)(2.5kg) = 34000 N

So how is that person so strong? A car can make a much bigger dent to another car than a man can do with a hammer. The force values never make any sense.

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You are confusing the transient forces generated by contact dynamics (bat on ball, axe head on wood) with the much smaller forces Soso and the wood chopper use to get the ball/axe moving. Contact dynamics typically generate very high but very short-lived forces.

A change in momentum results from a force acting over a period of time, and is a product of the force and the time it acts over. A force that large acting over a small period of time is not uncommon

## 1. How is swing force calculated in baseball?

The formula for calculating swing force in baseball is mass times acceleration, or F=ma. This means that the force of a baseball swing is determined by the mass of the bat and the acceleration of the swing.

## 2. What factors contribute to swing force in baseball?

Aside from the mass of the bat and the acceleration of the swing, other factors that contribute to swing force include the speed and trajectory of the pitch, the angle and speed of the swing, and the strength and technique of the batter.

## 3. Can swing force be measured accurately?

Yes, swing force can be measured accurately using specialized equipment such as a force plate or a high-speed video camera. These tools can provide precise measurements of the force generated during a baseball swing.

## 4. How does swing force affect the distance and trajectory of a hit?

The greater the swing force, the faster the ball will travel and the farther it will go. Swing force also affects the trajectory of the ball, with higher forces resulting in a flatter, more powerful hit.

## 5. Can swing force be improved through training?

Yes, swing force can be improved through training and practice. By focusing on building strength, improving technique, and increasing bat speed, a batter can increase their swing force and potentially hit the ball harder and farther.