# Newton's Third Law

## B2-11: EQUILIBRIUM OF FORCES - OHAUS PROJECTION

Purpose: Demonstrate equilibrium of forces

## B2-04: VERTICAL FORCES - FOUR SPRING SCALES

Purpose: Show addition of forces along a line

## B2-02: SUM OF FORCES - SPRING SCALES

Purpose: Show that the sum of forces exerted on the mass by the scales is constant

## B2-01: SUM OF FORCES IN A LINE

Purpose: Demonstrate that forces in one dimension add algebraically

## B1-24: CENTER OF MASS - CARTS ON BALANCE BOARD

Purpose: Show that the center of mass may remain at rest during motion within the system.

## C5-19: ACTION AND REACTION - INSTRUCTOR AND CART

Purpose: Demonstrate action-reaction pairs in a dramatic way

## C5-17: ROCKET BOTTLE

Purpose: Illustrate the rocket principle in a dramatic way

## C5-32: SAILING UPWIND - HAIRDRYER AND SAILBOAT

Purpose: Illustrate sailing upwind

## C7-23: MEDICINE BALL AND SKATEBOARD

Category: C7 Collisions
Purpose: Demonstrate large-scale collisions

## F2-21 REACTION TO BUOYANT FORCE

Category: F2 Buoyancy
Purpose: Demonstrates the reaction force using a liquid.

## C6-02: INCLINED PLANE - FRICTION BLOCK

Category: C6 Friction
Purpose: Demonstrates that the coefficient of static friction is greater than the coefficient of sliding friction, and determines the coefficient of static friction.

## C6-01 INCLINED PLANE - FRICTION BOX AND WEIGHTS

Category: C6 Friction
Purpose: Shows that the coefficient of friction does not depend upon the mass of the object although the frictional force does.

## C5-18 FAN CART

Purpose: Demonstrate Newton's third law of motion

## C5-14 ROCKET TRIKE

Purpose: Demonstrate Newton's third law of motion

## C5-13 WATER ROCKET

Purpose: Demonstrate Newton's third law of motion

## C5-02 SPRING AND PULLEY PARADOX

Purpose: Show that the action-reaction pairs have equal magnitude
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• #### C7-01: AIR TRACK - ELASTIC COLLISIONS

Demonstrate conservation of energy and conservation of momentum in elastic collisions Read More
• #### C7-02: AIR TRACK -INELASTIC COLLISIONS

Demonstrate conservation of momentum in elastic collisions Read More
• #### C7-03: AIR TRACK - SCATTERING WITHOUT CONTACT

Show that elastic scattering can occur between two objects without actual physical contact between the objects Read More
• #### C7-04: AIR TRACK - COLLISION VELOCITY MULTIPLIER

Illustrate velocity multiplication with a three-to-one mass ratio collision Read More
• #### C7-11: COLLISIONS OF BALLS - EQUAL MASSES

Demonstrates conservation of energy and conservation of linear momentum in multiple elastic collisions Read More
• #### C7-12: COLLISION OF BALLS - ONE LIGHTER MASS

Show what happens when one mass in a collision ball set is different from the others Read More
• #### C7-13: COLLISIONS OF BALLS - GRADUATED MASSES

Demonstrate how the velocity is multiplied by a sequence of collisions between balls of decreasing mass Read More
• #### C7-14: COLLISIONS OF BALLS WITH FLOOR

Illustrate collisions of different balls with the floor Read More
• #### C7-15 COLLISIONS OF BALLS - 3 TO 1 MASS RATIO

Shows velocity multiplication in colliding balls Read More
• #### C7-16: HAPPY AND UNHAPPY BALLS

Illustrate coefficient of restitution Read More
• #### C7-17 SUPERBALL

Illustrates nearly elastic collisions Read More
• #### C7-18 COLLISIONS OF BALLS - ASTROBLASTER

Shows velocity multiplication in colliding balls Read More
• #### C7-19: GAUSSIAN GUN

Demonstrate transfer of energy in an elastic collision Read More
• #### C7-21: ENERGY AND MOMENTUM - COLLISION AND PROJECTILE

Illustrate conservation of momentum and conservation of energy Read More

• #### C7-24: SILLY PUTTY

Show collisions with an unusual material Read More
• #### C7-25: SUPERBALL, VACUUM MUD AND WOOD BLOCK COLLISIONS

Show that a larger impulse is imparted by an elastic collision Read More

• #### C7-42: AIR TABLE - COLLISIONS OF PUCKS

Qualitatively demonstrate elastic and inelastic two-dimensional collisions Read More
• #### C7-43: AIR TABLE - SMALL - COLLISIONS OF PUCKS

Demonstrate collisions of pucks on an air table in rooms not accessible by the large air table Read More