Wood Vs Metal
- What Has More Force Wood Or Metal Bat? By Nathaniel
- A ball hit with a wood bat will travel farther than a ball hit with a metal bat.
- Wood vs Metal
- WOOD BAT WEIGHT AND MASS
- Is a wood bat stronger? Yes or No
- Mass- is a measure of total quantity of matter in
- an object (Mass of a bat is a constant)
- Weight- Weight is a measurement of the gravitational
- force acting on an object ( Weight of an object
- varies with the objects geographical location)
- Example: A 19oz bat at Woodward Academy weighs less at the equator and on the moon but the mass stays the same.
- Is a Wood bat Solid?
- Solid Is the physical state of a shape and a volume.
- The three states of matter are
- Solid: Wood is packed closely together
- Liquid: Units are not packed closely together
- Gas: Vapors are far apart.
- Wood Bats are made of Natural Material
- Wood is a pure substance that cannot be changed to other kinds of matter or physical means.
- Wood is a common substance used in everyday life.
- Wood Bat SWEET SPOT
- What is a sweet spot? A perfect small area on the barrel of the bat. The Preferred area of the bat to hit the ball.
- What happens when you hit the ball on the sweet spot?
- The ball travels farther because of Newton's 2 nd law of motion
- What happens if you dont hit the ball on the sweet spot?
- Bat vibrates and takes away energy from the ball.
- If the ball is not hit on the sweet spot the ball does not travel as far.
- Metal Bats are Hollow
- Hollow means having a closed body which is not filled (bat barrels are empty)
- weight is distributed different than a wood bat.
- Center of mass for metal bat is closer to the handle.
- Center of mass for wood bat is closer to the barrel.
- Balance point: point on the bat where the weight can be balanced on both sides.
- Lever first class : fulcrum is in the middle and the load and effort is on either side
- Inertia of the bat makes all the difference
- Inertia is Newton's first law of motion: an object at rest stays at rest and an object in motion stays in motion.
- What does this mean?: center of mass is influenced by balance point which affects inertia.
- METAL BAT ACCELARTION
- Metal bats are 5-7mph faster than the wood bat
- Aluminum bats have the Trampoline effect
- When a wood bat hits a ball it compress and loses 75% of its energy.
- When an aluminum bat hits a ball it compresses but loses a fraction of its energy.
- What makes this possible?
- Energy -Comes from the batters body into the bat to the ball
- Inertia -Comes from the bat moving to the ball.
- METAL BATS DONT BRAKE
- The handle is a thin metal tube with thick walls
- The barrel is made of thin metal which may dent or crack but will not break.
- Wood bats are made with wood or ash and will break if the bat hits the ball towards the middle closer to center of mass.
- METAL BATS ARE MAN MADE
- Sprinting Toward First Base
- Ironing process metal heated up to 900 degrees to create the barrel and the handle.
- Cleaning, Heat Treating, and Aging
- Heating treatment and aging up to 300 degrees
- Capping, and Silk Screening
- - Final Assembly and Packaging)
- -Rubber grip and chemical coating.
- THE WOOD BAT IS STONGER AND HAS MORE MASS BUT THE HITTER CAN CONTROL THE METAL BAT BETTER..
- METAL BAT LARGE SWEET SPOT
- Is a metal bats sweet spot larger than a wood bats sweet spot?
- Yes because of the contact surface.
- Metal bat has a large contact surface
- Resulting in more hard hit balls
- More home-runs with a good swing not a perfect swing
- Wood bat has a small contact surface
- Resulting in ground out or fly out
- Home-runs must be a perfect swing.
- The wood bat center of mass is close to the end of the barrel.
- The center of mass of the metal bat is closer to the handle.
- EXPERIMENT TO FIND OUT WHICH BAT HAS MORE SPEED AND DISTANCE The next two slides you will see me hit with a wood and metal bat. Hitting with both bats involves Newton's 2 nd law
- Wood Bat Demonstration
- Wood Bat Data 60ft 57ft 15ft 58ft 55ft Average Distance Distance Distance Distance
- Wood Bat Data
- Metal Bat Demonstration
- Metal Bat Data 60ft 57ft 15ft 58ft 55ft Average Distance Distance Distance Distance
- Metal Bat Data
- Kelly, J. (2000). Baseball; Celebrate Americas national pastime in pictures: The history, the heroes, the gear, and the game. Dorling Kindersley Publishing, Inc. New York, N.Y.
- Stoker, S.H. (2007). General Organic, and biological Chemistry(4 th ed). Houghtonn Mifflin, Boston, MA.