Thursday, 12 June 2014 13:35

## C8-13: BUNGEE JUMPER MODEL

• ID Code: C8-13
• Purpose: Determine the minimum value of the spring constant of a bungee rope to ensure a safe jump.
• Description:

Student of mass M jumps from a cliff of height H tied to a bungee rope of unstretched length Lo. Assume a vertical jump with initial velocity of zero. Neglect air resistance and mass of the rope.

When the spider jumps off the platform the spring extends to within a few inches (or centimeters in physics) of the floor before pulling the spider back up.

DANGER - IMPORTANT NOTE: Bungee cords are made of shock cords (elastomers) or from rubber. They DO NOT behave as linear springs. It would be dangerous to assume linearity of a real bungee jumping cord and make calculations on this basis.

• Availability: Available
• Loc codes: FS1
• #### C8-01: GIANT PENDULUM

Dramatically demonstrates conservation of energy Read More
• #### C8-03: GALILEO'S PENDULUM

Demonstrate conservation of energy in a simple system. Read More
• #### C8-04 HILL TRACK

Demonstrates conservation of energy Read More
• #### C8-05: CONSERVATION OF ENERGY IN VERTICAL PROJECTILE

Show the relation between initial velocity and height of a vertical projectile. Read More
• #### C8-06 PILE DRIVER

Illustrates gravitational potential energy converting into kinetic energy converting into work Read More
• #### C8-11 INTERNAL VS. EXTERNAL ENERGY - SPRING-COUPLED SUPERBALLS

Shows that when energy disappears from the center of mass motion it may be converted into internal energy Read More
• #### C8-12: JUMPING MASSES WITH INTERNAL SPRINGS

Demonstrate conversion of internal energy of a spring into kinetic energy and then gravitational potential energy. Read More
• #### C8-13: BUNGEE JUMPER MODEL

Determine the minimum value of the spring constant of a bungee rope to ensure a safe jump. Read More
• #### C8-14 JUMPING CLAMP

Demonstrates mechanical potential energy transforming into kinetic energy Read More
• #### C8-21: ROCK AND WASTE BASKET

Demonstrate conservation of energy in a humorous way. Read More
• #### C8-22: ENERGY CONVERSION - SUPERBALL AND SOUNDING BOARD

Show transformation of energy from one form to another. Read More
• #### C8-23: WORK DONE BY PUSHING ON WALL

Illustrates that the wall and the floor do no work. Read More