Thursday, 12 June 2014 15:05

## C7-51: BALLISTIC PENDULUM - PELLET GUN

• ID Code: C7-51
• Purpose: Determine the speed of an air gun pellet using a ballistic pendulum.
• Description: The pellet from an air gun is shot into a foam-filled can, which acts as the pendulum. Conservation of linear momentum in the inelastic collision determines the speed with which the pendulum receptacle leaves the collision. Conservation of energy determines how high the pendulum will rise, or alternatively, the maximum angle to which it swings. Working backward, we can determine the velocity v of the pellet: v = [(M + m)/m] SQRT (2gh), where m is the mass of the pellet, M is the mass of the receptacle can, h is the height to which the can rises, and g is the acceleration of gravity. The height h is determined by measuring the radius R of the pendulum and the horizontal displacement x of the receptacle can after the collision. Be familiar with the safety mechanism, and know where the pellet exits the gun before firing. Pump gun ONCE before firing.
• Availability: Available
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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
• #### C7-22: COLLISION OF BALL WITH STUDENT

Involve students with collisions. 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