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:

24 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
24 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 48 long
$31.99
Heavy Duty Bungee Cord 1 2 x 24 Tie Down Strap
Heavy Duty Bungee Cord 1 2 x 24 Tie Down Strap
$1.19
10 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
10 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$32.50
50pcs 8 200x3mm Strong Self Locking Nylon Plastic Wire Cable Zip Ties Cord Wrap
50pcs 8 200x3mm Strong Self Locking Nylon Plastic Wire Cable Zip Ties Cord Wrap
$2.94
50Pcs Blue Colored Nylon Zip Ties Wraps Strips Organizer For Cable Cord Wire
50Pcs Blue Colored Nylon Zip Ties Wraps Strips Organizer For Cable Cord Wire
$2.87
10PC 18 Heavy Duty Bungee Cords 18 inch CAL HAWK BRAND Thick Tie Downs w Hooks
10PC 18 Heavy Duty Bungee Cords 18 inch CAL HAWK BRAND Thick Tie Downs w Hooks
$19.75
10 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
10 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$21.50
MASTERLOCK 24 PACK BUNGEE CORD TIE DOWN ST3023AT
MASTERLOCK 24 PACK BUNGEE CORD TIE DOWN ST3023AT
$20.29
50 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
50 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$75.00
50 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
50 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$48.00
20 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
20 Pack 31 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$45.00
20 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
20 Pack 15 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$38.00
20 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
20 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$48.00
10 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
10 Pack 41 EPDM Rubber Tie Down Cord Chrome Hooks Bungee Strap Rope Elastic
$35.00
2x White Pack of 100PCS 116 Network Cable Wire Tie Strap Zip Nylon Cord Kit
2x White Pack of 100PCS 116 Network Cable Wire Tie Strap Zip Nylon Cord Kit
$10.44
2x Black 100pcs 77 77 inch Network Cable Wire Tie Strap Zip Nylon Cord
2x Black 100pcs 77 77 inch Network Cable Wire Tie Strap Zip Nylon Cord
$2.99
2x White Pack of 100PCS 116 Network Cable Wire Tie Strap Zip Nylon Cord Kit
2x White Pack of 100PCS 116 Network Cable Wire Tie Strap Zip Nylon Cord Kit
$4.99
20PC 24 Heavy Duty Bungee Cords 24 inch Long Bungee Thick Tie Downs w Hooks
20PC 24 Heavy Duty Bungee Cords 24 inch Long Bungee Thick Tie Downs w Hooks
$18.99
100 PACK HEAVY DUTY Nylon Cable Zip Tie 11 inch 46LBS Black Wire Cord Electrical
100 PACK HEAVY DUTY Nylon Cable Zip Tie 11 inch 46LBS Black Wire Cord Electrical
$5.59
10 Pcs Smart Wire Cord Cable Clip Ties Organizer Holder Line Fixer exclusive
10 Pcs Smart Wire Cord Cable Clip Ties Organizer Holder Line Fixer exclusive
$4.00
Exclusive Design 10 x Cable Wire Cord Cable Holder Tie Clips Fixer Drop Adhesive
Exclusive Design 10 x Cable Wire Cord Cable Holder Tie Clips Fixer Drop Adhesive
$4.00
500 Pcs 10mmx150mm Plastic Toothed Power Cable Wire Cord Zip Ties Black
500 Pcs 10mmx150mm Plastic Toothed Power Cable Wire Cord Zip Ties Black
$33.17
100x Heavy Duty Blue Colored Nylon Wire Cord Cable Zip Ties Organizers Straps
100x Heavy Duty Blue Colored Nylon Wire Cord Cable Zip Ties Organizers Straps
$4.34
50Pcs Self locking Blue Colored Nylon Wire Cord Cable Zip Ties Straps O
50Pcs Self locking Blue Colored Nylon Wire Cord Cable Zip Ties Straps O
$2.73
Blue Colored Nylon Zip Ties Wraps Strips Organizers For Cable Cord Wire 200Pcs
Blue Colored Nylon Zip Ties Wraps Strips Organizers For Cable Cord Wire 200Pcs
$7.19
200Pcs Green Colored Nylon Zip Ties Wraps Strips Organizers For Cable Cord Wire
200Pcs Green Colored Nylon Zip Ties Wraps Strips Organizers For Cable Cord Wire
$5.86
100x Weather Resistant Nylon Green Zip Ties Organizers Wraps For Wire Cable Cord
100x Weather Resistant Nylon Green Zip Ties Organizers Wraps For Wire Cable Cord
$3.68
50 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Zip Ties Straps
50 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Zip Ties Straps
$2.65
100 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Straps Zip Ties
100 Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Straps Zip Ties
$4.12
200x Heavy Duty Weather Resistant Nylon Blue Zip Ties Wraps For Wire Cable Cord
200x Heavy Duty Weather Resistant Nylon Blue Zip Ties Wraps For Wire Cable Cord
$6.89
50x Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Zip Ties Straps
50x Standard UV Resistant Nylon Cord Wire Cable Fasteners Strips Zip Ties Straps
$2.37
100x Heavy Duty Self locking Green Colored Nylon Wire Cord Cable Straps Zip Ties
100x Heavy Duty Self locking Green Colored Nylon Wire Cord Cable Straps Zip Ties
$3.57
200x Heavy Duty Weather Resistant Nylon Green Zip Ties Wraps For Wire Cable Cord
200x Heavy Duty Weather Resistant Nylon Green Zip Ties Wraps For Wire Cable Cord
$5.69
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
$16.98
100 pcs 1 pack 4 inch Black Nylon Cable Wire Zip Ties Cord 100mm x 3 mm
100 pcs 1 pack 4 inch Black Nylon Cable Wire Zip Ties Cord 100mm x 3 mm
$1.99
9 INCH BALL TIE DOWN CORDS 25PIECE PACK
9 INCH BALL TIE DOWN CORDS 25PIECE PACK
$23.92
Cable Cord Wire ZIP Ties Straps 14 inch 50LBS Nylon 100 PSC Pack Black
Cable Cord Wire ZIP Ties Straps 14 inch 50LBS Nylon 100 PSC Pack Black
$7.50
500cm Roll Hook and Loop Cable Wire Cord Strap Tie Holder Nylon 5m home network
500cm Roll Hook and Loop Cable Wire Cord Strap Tie Holder Nylon 5m home network
$4.15
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 long
12 HEAVY DUTY BUNGEE CORD TIE DOWN CORDS 72 long
$9.99


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