Cord Tie

multiple choice, what's the answer?

A woman performs a 'bungee jump', falling from a bridge with a length of elastic cord tied around her ankles. The gravitational potential energy of lost by the jumper at the lowest point has been transferred as:
A elastic strain energy in the cord.
B elastic strain energy and internal energy in the cord
C kinetic energy of the jumper OR
D kinetic energy of the jumper plus internal energy in the cord.

With reasons please. Thanks a lot.

Like all multiple choice you have to read carefully. The key bit is "at the lowest point".

At the lowest point the jumper has no velocity as their velocity is right at the point between going down and going up. So they have no kinetic energy. This rules out C and D.

Most of the energy will be transfered to the strain energy is the cord so it is A or B. However the transfer is not perfect and there will also be heat generated. Not sure what is meant by "internal energy in the cord" I would argue this includes heat in the cord. On that basis I would go with answer "B".

Discover Cord Tie On eBay Below:

500 PIECE 4 INCH IN BLACK NYLON CABLE ZIP WIRE TIE 18LB ELECTRICAL NETWORK CORD
500 PIECE 4 INCH IN BLACK NYLON CABLE ZIP WIRE TIE 18LB ELECTRICAL NETWORK CORD
$7.95
200 PIECE 4 INCH IN BLACK NYLON CABLE ZIP WIRE TIE 18LB ELECTRICAL NETWORK CORD
200 PIECE 4 INCH IN BLACK NYLON CABLE ZIP WIRE TIE 18LB ELECTRICAL NETWORK CORD
$4.10
1000 PIECE 4 INCH IN BLACK NYLON CABLE ZIP WIRE TIE 18LB ELECTRICAL NETWORK CORD
1000 PIECE 4 INCH IN BLACK NYLON CABLE ZIP WIRE TIE 18LB ELECTRICAL NETWORK CORD
$10.95
1000PCS 18LBS Plastic Cable Ties Network Cable Cord Wire Strap Nylon Tie Down
1000PCS 18LBS Plastic Cable Ties Network Cable Cord Wire Strap Nylon Tie Down
$5.99
500 x 55 Packaging Black Cable Cord Wire Tie Strap 140x3mm
500 x 55 Packaging Black Cable Cord Wire Tie Strap 140x3mm
$8.18
7 16x150 RUBBER ROPE SHOCK CORD TIE STRAP TIE DOWN
7 16x150 RUBBER ROPE SHOCK CORD TIE STRAP TIE DOWN
$61.22
100 Pack 7 3 8 inch White Network Cable Cord Tie Strap 100 Lbs Zip ties Nylon
100 Pack 7 3 8 inch White Network Cable Cord Tie Strap 100 Lbs Zip ties Nylon
$4.99
Cable Cord Wire ZIP Ties Straps 8 inch 40LBS Nylon 100 PSC Pack Black
Cable Cord Wire ZIP Ties Straps 8 inch 40LBS Nylon 100 PSC Pack Black
$4.90
Pack of 100 4 White Plastic Cable Ties Network Cable Cord Wire Strap 18 Lbs
Pack of 100 4 White Plastic Cable Ties Network Cable Cord Wire Strap 18 Lbs
$4.27
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
$22.99
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 36 LONG STRAPS
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 36 LONG STRAPS
$21.99
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 24 LONG
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 24 LONG
$20.99
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 LONG STRAPS
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 LONG STRAPS
$24.99
Cable Cord Wire ZIP Ties Straps 4 inch 18LBS Nylon 100 PSC Pack Black 4
Cable Cord Wire ZIP Ties Straps 4 inch 18LBS Nylon 100 PSC Pack Black 4
$3.90
95cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie 1000pcs
95cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie 1000pcs
$7.72
77cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie 1000pcs
77cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie 1000pcs
$6.80
6cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie 1000pcs
6cm Wholesale Nylon Network Cable Cord Wire Tie Strap Cable Zip Tie 1000pcs
$5.73
100 Pcs 3mm Width 150mm Length Teal Blue Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 150mm Length Teal Blue Nylon Cable Ties Wire Cord Strap
$6.05
US SELLER 10 Pack 75 inch White Network Cable Cord Wire Tie Strap Zip Nylon
US SELLER 10 Pack 75 inch White Network Cable Cord Wire Tie Strap Zip Nylon
$1.41
100 Pcs 3mm Width 100mm Length Green Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 100mm Length Green Nylon Cable Ties Wire Cord Strap
$5.81
4 piece 10 Rubber Tie Down Heavy Duty Motorcycle Car Truck Bungee Straps Cords
4 piece 10 Rubber Tie Down Heavy Duty Motorcycle Car Truck Bungee Straps Cords
$15.28
3 piece 20 Rubber Tie Down Heavy Duty Motorcycle Car Truck Bungee Straps Cords
3 piece 20 Rubber Tie Down Heavy Duty Motorcycle Car Truck Bungee Straps Cords
$15.48
2pcs Heavy Duty 18 Bungee Cord Elastic Tie Down Stretch Bungie Strap Metal Hook
2pcs Heavy Duty 18 Bungee Cord Elastic Tie Down Stretch Bungie Strap Metal Hook
$4.59
100 Pcs 3mm Width 200mm Length Yellow Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 200mm Length Yellow Nylon Cable Ties Wire Cord Strap
$6.31
White Set of 100pcs Pack 77 Network Cable Wire Tie Strap Zip Nylon Cord Kit
White Set of 100pcs Pack 77 Network Cable Wire Tie Strap Zip Nylon Cord Kit
$3.02
Black Pack of 100pcs 77 77 inch Network Cable Wire Tie Strap Zip Nylon Cord
Black Pack of 100pcs 77 77 inch Network Cable Wire Tie Strap Zip Nylon Cord
$2.69
Black Pack of 100pcs 116 116 inch Network Cable Wire Tie Strap Zip Nylon Cord
Black Pack of 100pcs 116 116 inch Network Cable Wire Tie Strap Zip Nylon Cord
$6.52
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 long
$14.00
Pack of 10 8 Black Hook and Loop Fastener Cable Tie Down Straps Reusable Cord H
Pack of 10 8 Black Hook and Loop Fastener Cable Tie Down Straps Reusable Cord H
$10.29
100 New 6 Inch Color Nylon Cable Cord Wire Zip Ties Strap 30 Lbs Uv Resistant
100 New 6 Inch Color Nylon Cable Cord Wire Zip Ties Strap 30 Lbs Uv Resistant
$8.48
100 Pcs 3mm Width 200mm Length Teal Blue Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 200mm Length Teal Blue Nylon Cable Ties Wire Cord Strap
$6.29
100 Pcs 3mm Width 100mm Length Blue Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 100mm Length Blue Nylon Cable Ties Wire Cord Strap
$5.83
100 Pcs 3mm Width 100mm Length Red Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 100mm Length Red Nylon Cable Ties Wire Cord Strap
$5.80
100 Pcs 3mm Width 200mm Length Red Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 200mm Length Red Nylon Cable Ties Wire Cord Strap
$6.34
1000 PACK 4 6 8 12 inch Assorted Cable Zip Ties Wrap Cord Free cutting tool
1000 PACK 4 6 8 12 inch Assorted Cable Zip Ties Wrap Cord Free cutting tool
$17.99
500PCS 12 White Plastic Cable Ties Network Cable Cord Wire Strap 60 Lbs
500PCS 12 White Plastic Cable Ties Network Cable Cord Wire Strap 60 Lbs
$18.49
Pack of 500 4 White Plastic Cable Ties Network Cable Cord Wire Strap 18 Lbs
Pack of 500 4 White Plastic Cable Ties Network Cable Cord Wire Strap 18 Lbs
$7.99
10PC 18 Heavy Duty Bungee Cords 18 inch Long Bungee Thick Tie Downs w Hooks
10PC 18 Heavy Duty Bungee Cords 18 inch Long Bungee Thick Tie Downs w Hooks
$18.25
100 Pcs 3mm Width 200mm Length Green Nylon Cable Ties Wire Cord Strap
100 Pcs 3mm Width 200mm Length Green Nylon Cable Ties Wire Cord Strap
$6.29


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