what is the maximum weight a worker can lift manually?
598359
approx 50 - 75\n\nit depends
549548
between 25 and 45 pounds
1028527
anything over 125-130 lbs.
900005
none\n\nIm so weak I can barely lift a pipe
758260
I think, therefore i am not certain.....\n\nI know that F=ma, or W=mg. Therefore 18kg x really 9.81, but i'll use 10m/seconds squared. W = 180N, so normal force pushing UP on the lawn mover is 180N. If there was only a horizontal force it would take mew or 0.15 x normal fore so, 180N x 0.15. BUT there is a n angle so 35 is feta, 180N is the adjacent side. use trig function (cos) to find hypotenuse. cos35= 180N/ x. when  you get x, it equals the applied force to get the mover to keep on moving or sliding as "they" say. \n\n1.4 m/s will be present when force is applied!!!!!!!!!!
535977
it can lift 10 times of its body weight.Its true really see discovery
340033
Nope.  When people are on your back, their body weight triples because you have balance them first...then try and do a push up.  I'd guess you'd have to have a 400 lb. bench press to be able to push up your own body weight...and a 250 lb. person on ur back.
1034449
definitely! Tried it using fireman lift or akido throw and the chap was at least a good 20-30 pounds heavier than me.... :P
748299
How strong does it need to be?.
597479
That the crane should lift, at the most, this weight.\n\nIf it lifts beyond its capacity, there could be a catastophic failure.
881560
If you lift a 100 pound weight with only 50 pounds of force, the weight will remain on the floor because of inertial (it is pulling down more by gravity than you are pulling up).  Although you may be greatly exerting yourself, you have added no energy to the weight.  If you now lift with an upward force of 101 pounds, you overcome the downward force of the weight and it rises.  Importantly you are now adding potential energy to the weight.  Lift the weight one foot and you have added 100 foot-pounds of potential energy by doing work (force times a distance) on the weight.  We know that a pendulum can convert potential energy (height) to kinetic energy (motion) continuously until stopped by friction (that converts the energy to heat and sound, etc.).  Therefore, a body will remain at rest until you add energy to it and it will then remain in motion until the energy is removed again.  Energy is added when a force acts on the weight for a distance and energy is removed when the weight acts as a force moving a resistance a distance.  This is simple in a frictionless (ideal) system but in fact friction often applies a force to the weight removing its energy in the form of heat.  Hope that helps a little.
336763
they always say that you can lift 2 times your body mass.
56048
May exceed 10,000 kg. The maximum published weight is 34,000 kg.
454463
There are many answers to your question. Gravity obviously. Another example is if you are try to lift a car with a lever or using a pulley to lift something.
405919
http://en.wikipedia.org/wiki/Hundred_weight
821170
Its possible if you lift the packages correctly every time.  But chances are you will be so tired and so bored that this would not happen which will defeat your purpose for getting this job in the first place.
551369
One of the best ways I've heard of was asking an applicant to pick up and carry a 60 lb. bag of something to another room. And if their response was they would need help, then they were at least aware enough of their own limitations and honest enough to say so that they were less likely to injure themselves on the job.