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:

Black Pack 12 inch 60 Lbs Network Cable Cord Wire Tie Strap Zip Nylon 100X WB
Black Pack 12 inch 60 Lbs Network Cable Cord Wire Tie Strap Zip Nylon 100X WB
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8 Nylon CABLE TIES white 20 inch Long x 3 16 Wide 50 lb locking cord ZIP TIE
8 Nylon CABLE TIES white 20 inch Long x 3 16 Wide 50 lb locking cord ZIP TIE
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap W
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap W
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap E
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap E
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XG
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XG
$11.03
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
$11.03
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
$11.03
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XD
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XD
$11.03
100 PCS Pack 12 inch 60 Lbs Black Network Cable Cord Wire Tie Strap Zip Nylon
100 PCS Pack 12 inch 60 Lbs Black Network Cable Cord Wire Tie Strap Zip Nylon
$5.46
New 100pcs Black 8 3x200mm Locking Nylon Plastic Cable Wire Zip Ties Cord Wrap
New 100pcs Black 8 3x200mm Locking Nylon Plastic Cable Wire Zip Ties Cord Wrap
$2.68
60 Nylon CABLE TIES White 7 1 2 x 3 16 60 lb Test zip Locking cord Wraps 75
60 Nylon CABLE TIES White 7 1 2 x 3 16 60 lb Test zip Locking cord Wraps 75
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Black Pack 4 inch Network Cable Cord Wire Tie Strap Zip Nylon 100 PCS  249056
Black Pack 4 inch Network Cable Cord Wire Tie Strap Zip Nylon 100 PCS 249056
$2.99
30 Nylon CABLE TIES 11 inch Long x 1 8 Wide WHITE 40 lb cord wire lock ZIP TIE
30 Nylon CABLE TIES 11 inch Long x 1 8 Wide WHITE 40 lb cord wire lock ZIP TIE
$6.83
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
$10.99
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap Y
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap Y
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XD
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XD
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XT
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XG
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap XG
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap J
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap J
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250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap G
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap G
$10.99
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
$10.99
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
$10.99
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
250 PCS 12 5x300mm Locking Nylon Plastic Cable Ties Zip BLACK cord Wrap
$10.99
10X Multi Color Stick Wire Cable Cords Strap Wraps Ties Reusable Hook
10X Multi Color Stick Wire Cable Cords Strap Wraps Ties Reusable Hook
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10X Multi Color Stick Wire Cable Cords Strap Wraps Ties Reusable Hook
10X Multi Color Stick Wire Cable Cords Strap Wraps Ties Reusable Hook
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200 PCS 75 inch 50 lbs Black Cable Wire Zip Nylon Plastic Cord Ties Wrap
200 PCS 75 inch 50 lbs Black Cable Wire Zip Nylon Plastic Cord Ties Wrap
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100 PCS 75 inch 50 lbs Black Cable Wire Zip Nylon Plastic Cord Ties Wrap
100 PCS 75 inch 50 lbs Black Cable Wire Zip Nylon Plastic Cord Ties Wrap
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10x Zip Tie Mount Kit Self Adhesive Cable Management Cord Organizer Medium
10x Zip Tie Mount Kit Self Adhesive Cable Management Cord Organizer Medium
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350 Pc Nylon Multi Color Cable Zip Tie Assortment 4 8 11 Wire Cord Electrical
350 Pc Nylon Multi Color Cable Zip Tie Assortment 4 8 11 Wire Cord Electrical
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New 100pcs Black White Network Nylon Plastic Cable Wire Zip Tie Cord Strap
New 100pcs Black White Network Nylon Plastic Cable Wire Zip Tie Cord Strap
$1.00
100Pcs Self locking Electric Nylon Cable Wire Cord Zip Tie 2 Colors 4 Sizes
100Pcs Self locking Electric Nylon Cable Wire Cord Zip Tie 2 Colors 4 Sizes
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Bungee Cord Assortment With Tarp Ties 24 Pieces By BISON GEAR UV Resistant
Bungee Cord Assortment With Tarp Ties 24 Pieces By BISON GEAR UV Resistant
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Black 100 Piece 8 Cable Ties assortment Network Cable Cord Wire Tie Strap
Black 100 Piece 8 Cable Ties assortment Network Cable Cord Wire Tie Strap
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100 PCS Pack 6 inch Black Network Cable Cord Wire Tie Strap 30 Lbs Zip Nylon in
100 PCS Pack 6 inch Black Network Cable Cord Wire Tie Strap 30 Lbs Zip Nylon in
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3 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101720
3 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101720
$7.55
4 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101721
4 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101721
$7.85
6 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101722
6 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101722
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8 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101723
8 100PK Black Network Cable Cord Wire Tie Strap Zip Tie Nylon101723
$11.95

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