Plates 45
June 30th, 2007
Plates 45
Check out this page if you are searching for Plates 45
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 BOWFLEX 1090 DUMBBELLS AUTHORIZED DEALER STORE RECEIPT PROVIDED  US $585.00
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 Proviction Weight Bench Hex Dumbells Set with Rack and 450 lbs of TDS Plates US $550.00
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 Tracker 550 Deluxe Half Cage Home Gym with Olympic Bar Plates Cables Bench US $199.00
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 245lbs Olympic Weight Set by Ivanko 6ft Barbell plus FREE bench US $299.00
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 standard 1 weight plates set 40kg weights barbell rubber coated 4 X 10kg US $56.56
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 standard 1 weight plates set 100kg weights barbell rubber coated 10 X 10kg US $157.14
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 Bowflex SelectTech 552 Adjustable Dumbbells Pair US $295.00
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 Weights Standard Olympic 45LB Barbells Plates 6 US $135.00
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 York Roundhead rack of vintage dumbells strenth plates weights US $899.99
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 400 pound Olympic style weight set US $200.00
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 Bowflex 1090 Adjustable Dumbbells Pair Stand US $679.99
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 260 lb Set Rubber Bumper Weight Plates Crossfit Olympic Garage Gym SRAB US $478.00
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 Freshly designed Bowflex SelectTech 552 Adjustable Dumbbell Single New US $179.99
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 Body Solid 500 Rubber Olympic Weight Set 7 Bar OSR500S US $719.99
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 Bowflex SelectTech 1090 Adjustable Dumbbells Pair US $557.99
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 Body Solid 300 Steel Olympic Weight Set 7 Bar OST300S US $459.99
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 BOWFLEX SelectTech 552 Adjustable Dumbbells Pair US $227.50
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 ✦✦✦VINTAGE YORK OLYMPIC WEIGHTS✦✦8 X 5 LB PLATES✦✦RARE BARBELLSstrongman grip US $39.99
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 ✦✦✦VINTAGE YORK OLYMPIC WEIGHTS✦✦2X 25 LB PLATES✦✦RARE BARBELLSstrongman grip US $49.99
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 Marcy 300lb Olympic Weight Set Barbells 300 lb Weights New US $279.95
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 ✦✦VINTAGE YORK OLYMPIC WEIGHTS✦✦2X 25 LB PLATES✦✦RARE BARBELLSstrongman grip US $14.99
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 Freshly designed Bowflex SelectTech 552 Adjustable Dumbbells Pair New US $269.99
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 NEW OSR400S Body Solid Rubber Grip Olympic Weight Set Chrome Barbell 400 lbs US $775.00
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 New Two Bowflex SelectTech 552 Adjustable Dumbbells US $374.99
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 Premium Rubber Coated Olympic Weight Set XM 3808 US $351.99
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 Brand NEW Bowflex SelectTech 552 Dumbbells SET Stand 51 BENCH US $459.99
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 ✦✦✦VINTAGE YORK OLYMPIC WEIGHTS✦✦6X 10 LB PLATES✦✦RARE BARBELLSstrongman grip US $59.99
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 WRIGHT Rubber 260 lb Black Solid Bumper Plate Set US $399.00
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 290 Lbs Olympic weights used US $75.00
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 CROSSFIT 25lb Pair Rubber Bumper Plates Olympic Weights Crossfit SRA US $68.95
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 45lb Pair Rubber Bumper Plate Olympic Weights Crossfit SRA US $110.00
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 Weight Plates Gray New Olympic 200 lbs Economy Bar Collars Set 2 USA Sports US $240.00
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 275 lb Olympic Bumper Weights with 1500 lb Capacity Bar US $780.98
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 CFF Speed Training Pull Sled w Harness and strap US $114.95
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 Body Solid 300 Steel Grip Olympic Weight Set OST300S US $499.99
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 OLYMPIC RUBBER BUMPER PLATES PAIR 15KG 33LB 66LBS US $105.00
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 Body Solid 500 Steel Olympic Weight Set 7 Bar OST500S US $639.99
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 Body Solid 400 Rubber Olympic Weight Set 7 Bar OSR400S US $669.99
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 Body Solid 400 Steel Olympic Weight Set 7 Bar OST400S US $539.99
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 Body Solid 500 Rubber Grip Olympic Weight Set OSR500S US $758.99
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 Body Solid 500 Steel Grip Olympic Weight Set OST500S US $679.00
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 Body Solid 400 Rubber Grip Olympic Weight Set OSR400S US $669.99
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 Body Solid 400 lb Steel Grip Olympic Weight Set OST400S US $599.99
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 Hampton Olympic Grip Rubber Weight Plates 5 lbs US $16.99
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 USA Sports Olympic 300 Pound lb Weight Set OSS 300 NEW US $391.00
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 Bowflex 552 Adjustable Dumbbells Pair Stand US $495.00
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 BOWFLEX 1090 DUMBBELLS PLUS STAND AUTHORIZED DEALER STORE RECEIPT PROVIDED US $739.00
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 Yukon Olympic Plate Weight Set OLY 230 US $529.00
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 Champion Barbell 45 lb Olympic Grip Plate US $29.95
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 Troy Barbell weights 480 olympic set wide flange w bar US $657.60
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 XMark 455 Hammerstone Olympic Weight Set XM 3375 455S US $762.40
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 XMark Fitness 400 Olympic Plate Weight Set XM 3375 400S US $716.07
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 XMark 400 lb Premium Olympic Weight Set XM 3378 400S US $833.47
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 100 lb Olympic Rubber Bumper Weight Plate 200lb Pair Set Crossfit US $360.00
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 XMark 355 Hammerstone Olympic Weight Set XM 3375 355S US $598.47
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 Horizontal Olympic Bumper Weight Plate Barbell Rack Full Set Crossfit Garage Gym US $149.00
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 York Barbell 35 lb Intl Olympic Weights For a Pair US $69.93
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 York Barbell 25 lb Intl Olympic Weights For a Pair US $49.95
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 York Barbell 10 lb Intl Olympic Weights For a Pair US $19.98
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 Stamina 50 lb Versa Bell II Adjustable Dumbbell US $100.00
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 Rubber Bumper Plates Black 5 lbs Rubber US $39.99
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 Hampton Olympic Grip Urethane Encased Weight Plates US $21.99
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 ADER CROSSFIT SOLID RUBBER BUMPER PLATE RACK TREE US $149.00
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 CROSSFIT SOLID RUBBER BUMPER PLATE 260LB SET COLOR US $649.00
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 Hampton Olympic Grip Cast Iron Weight Plates 35 lbs US $52.99
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 NEW Yukon Fitness 5 50 lb Hex Dumbbell Weight Set with RACK HDS 312 US $1,099.99
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 CrossFit Package US $375.00
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 45 lb Pendlay V2 Olympic Rubber Bumper Plate 45lb Set US $109.99
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 Cap Barbell 45 lb Olympic Weight US $44.99
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 XMark 455 lb Hammerstone Gray Olympic Weight Set XM 3375 455S US $762.40
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 XMark 400lb Hammerstone Gray Olympic Weight Set XM 3375 400S US $716.07
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 XMark 400 lb Premium Rubber Coated Olympic Barbell Set XM 3378 400S US $833.47
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 New Bowflex SelectTech 552 Adjustable Dumbbells Pair US $349.99
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 York 300 lb Olympic Weight Set US $499.95
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 XMark 355 lb Hammerstone Gray Olympic Plate Weight Set XM 3375 355S US $598.47
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 Troy VTX Premium Olympic 300 lb Weight Set GOSS 300VR US $590.00
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 XMark Fitness 500 lb Hammerstone Gray Grip Plate Weight Olympic Barbell Set US $895.00
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 XMark Fitness 400 lb Hammerstone Gray Grip Plate Weight Olympic Barbell Set US $725.00
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 Bowflex 552 Selecttech adjustable pair of Dumbbells STAND US $509.99
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 Weight Plates New USA Sports 2 1 2 lbs Gray Olympic US $3.85
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How much energy in joules is expended by the lifter above in the press phase of the lift?
In this standing press shown above, the lifter is expected to lift the weight from the chest overhead by extending the arms only. In the lift above, the lifter weighs 145 pounds. The bar weights 45 pounds. The largest plates weigh 45 pounds each and the somewhat smaller plates weigh 25 pounds each.
Energy = weight*(change in height)
Figure out how much weight was moved and what vertical distance it was moved. Apparently you are working in English units, so use the height in feet and the answer will be in foot pounds.
Edited: OK, the problem asks for Joules. Here is the formula for gravitational potential energy, which is the same as the energy the weightlifter expends in working against gravity.
E = mgh
To get the answer in Joules, use mass in kg (you'll have to get that from the figure), g = 9.8 m/sec^2, and h in meters (you'll have to get that from the figure).