Wednesday, 10 July 2013 15:55
B1-04: Center of Mass - Brass Barbell
Additional Info
- ID Code: B1-04
- Purpose: Demonstrate stable equilibrium when supported at center-of-mass
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Description:
A brass barbell with two different disc-shaped masses, one on each end, is supported by a stand at its center of mass.Compare this to lifting up an asymmetrical barbell in the gym with one hand, and finding that it is the easiest to hold it at its center of mass.
Engagement Suggestion:
Ask students to make predictions:
• What would happen if the brass barbell is shifted so that the heavier mass is closer to the middle?
• Would the barbell rotate and if so, in what direction?
• Would it remain on the stand?
- Availability: Available
- Loc codes: B1
- Videos-1: Demonstration video on YouTube
Published in
B1 Center of Mass Statics
Tagged under
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B1-01 CENTER OF MASS - DISC SECTION
Demonstrate finding center of mass for an irregularly-shapped object Read More
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B1-02: CENTER OF MASS - LEANING TOWER
Demonstrate the effect of center of mass location Read More
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B1-03: CENTER OF MASS - LEANING TOWER ON INCLINED PLANE
Demonstrate equilibrium when its center of mass is above its base Read More
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B1-04: Center of Mass - Brass Barbell
Demonstrate stable equilibrium when supported at center-of-mass Read More
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B1-05: CENTER OF MASS - PLUMBER'S HELPER
Locate the center of mass of an irregular object Read More
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B1-06: Double Cone - Large
Demonstrate a center-of-mass paradox Read More
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B1-07: DOUBLE CONE - SMALL
Demonstrate a center of mass paradox Read More
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B1-08: STATES OF EQUILIBRIUM - CONE
Illustrate stable, unstable, and neutral equilibrium Read More
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B1-09: CENTER OF MASS - TRIANGLE
Demonstrate the process of locating the center of mass Read More
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B1-11: BALANCE MAN
Illustrate stable equilibrium Read More
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B1-12: CENTER OF MASS - HINGED STICK PARADOX
Illustrate the center of mass in a surprising way Read More
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B1-13: CENTER OF MASS - FORK AND SPOON ON TOOTHPICK
Illustrate the center of mass in a surprising way Read More
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B1-14: CENTER OF MASS - BOTTLE
Illustrate the center of mass in a surprising way Read More
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B1-15: TOPPLING CYLINDERS
Illustrate stable and unstable equilibrium in a surprising way Read More
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B1-16: CORBELED ARCH
Illustrate how the center of mass affects the stability of an arch Read More
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B1-17: CENTER OF MASS - STICKS
Illustrate the center of mass in a surprising way Read More
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B1-18: Center of Mass - Soda Can and Water
Show how moving the center of mass of an object changes how it balances. Read More
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B1-21: BALANCE BEAM - VARIATION ON THE TIGHTROPE WALKER
Show how arms or a pole are used to obtain greater stability Read More
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B1-22: CENTER OF GRAVITY USING TEETER TOTTER
Determine the center of gravity of the human body Read More
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B1-24: CENTER OF MASS - CARTS ON BALANCE BOARD
Show that the center of mass may remain at rest during motion within the system Read More
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