I want to buy a heavy punching bag, how do I know what weight I need?
461286
If your serious,ask a trainer.It sounds as if you do not have much experience.You also need gloves,with wrist protection.You can easily break your wrist if it is not supported correctly.
168241
It varies between weights. Anywhere from 25-32, most likely.
486876
Please see this link which explains\n\nhttp://en.wikipedia.org/wiki/Boxing_weight_classes
126353
First put 3 bags on each side. \n\nIf they are balanced then the faulty bag is one of the other two. Put those two on and one will be heavier than the other and the one that weighs less will be the faulty bag.\n\nIf when you put the three bags on the balance and one side weighs less then you'll know the faulty bag is on that side.  Then take two of those and put on balance and the one that weighs less will show itself and there is the faulty bad. If those two are balanced then the third one is the faulty bag
343569
Refer to this chart on www.weightchart.org or www.consumerfreedom.com/games.cfm/ID/1
1048021
Between 52-66kg (114-145lbs - I think) based on the Body Mass Index.  Hope this helps.
161710
Punching bag. Good stress releif and fun.\n\nSomething like this would be even better but it more expensive than just a regular punching bag.\nhttp://corporate.marketworks.com/storefrontprofiles/processfeed.aspx?sfid=101468&i=7672900&mpid=6&dfid=1
1185724
100-200 grams (~3.3 to 6.7 oz.) would be a safe estimate. It is going to vary a lot due to differing weights of cotton. A Fruit of Loom undershirt may weigh less than 1/2 of a top quality BEEFY-T or Jerzees t-shirt. \nThen there are those wonderful t-shirts from american apparel. So soft, so thick. Up to 270 gms. \n(all estimates based on ~ 1sq yd of fabric, roughly a size L T-shirt. The cheaper the shirt the less fabric for a particular size.)\n\n(Zack may be stating that grams are a measure of mass rather than weight. But even if he were correct, your question is termed in common terms and easily understood. Unlike Zack's comment.)
1003427
heavier than a small sized bag of heavy things
982174
I can give you several load ranges from differrent books, need your bullet preference, weight , make etc.
405919
http://en.wikipedia.org/wiki/Hundred_weight
772682
I'm a personal trainer with Gold's Gym. I'm having trouble believing you on this, bro, because I've never seen a bench machine go up to 400 lbs before. Usually they don't go above 250. But I don't want to call you a liar. So, the rule of thumb on those machines is that in true strength equivelancy, they are about 2/3 that of free weights. Thus: if you are indeed benching 420, you should be able to do about 275-280 with free weights. I know the 2/3 rule sounds low, but you'd be amazed how much difference it makes when you don't have to balance the weights, and can just explode into the handles.
613586
For calculating weight you will be needing the specific gravity or bulk density of the material it is made of.\nElse you need a weigh balance.
859844
The previous answerer has the right idea but the wrong details.\n\nThe four parts should weigh 1, 3, 9 and 27 pounds.  The logic is that the desired weight is written in "balanced ternary" notation, where the values of the digit positions are 1, 3, 9, 27, 81, . . . (that's "ternary"), but the allowed digit values instead of being 0, 1, 2 (that's regular ternary) are -1, 0, 1 (that's balanced ternary).  Then the digit values for any desired total weight written down in balanced ternary tell you whether the weight for that column is to go in one pan, go in the other pan, or stay on the floor.
77914
Weigh the item you're selling first--go to USPS.com to find out how much shipping will cost.  Add that in your listing. There is a place on the "sell" page for it.  the buyer pays shipping.  You can use any form of shipping you prefer. USPS, UPS, Fex Ex etc.  Watch other sellers.\nKaren
951258
Try and test that is the best advice you will get. For me I prefer girl decks because I believe they are stronger than the rest. You should also ask the sales clerk to recommend a size based on your weight.
969767
It depends on the density of the concrete.\nThere are 40.5 (3*3*4.5) cubic feet, or 1.5 cubic yards in your problem\n\nHowever, here is a concrete calculator:\n\nhttp://www.decks.com/calculators/concrete.aspx\n\nThis gives an answer of 60.8 80lb bags.\nThey are therefore assuming a density of ~120lb/cubic foot\nConcrete is usually between 90 and 125lbs/cubic foot.\nhttp://hypertextbook.com/facts/1999/KatrinaJones.shtml\nAt 90 lbs/cubic foot you would need 45.5 80 lb bags.\n(The bag should tell you what the ratio is for optimal concrete with their product.  Just remember that you need 40.5 cubic feet and calculate using their numbers.)