There is not a direct answer to your question due to you are asking about engine size/displacement. The amount of "work" an engine can accomplish is related to the torque that is output from an engine. The amount of torque an 80cc engine can produce is also variable. For example, a screaming 2 stroke run at 12,000 rpm does not have much torque -- it relies on the engine momentum to do work. A 4 stroke 80cc engine would have more "torque" (but less horsepower)
There is also a gearbox you have to include. A large reduction gearbox that turns slow for the high engine rpm could output hundreds of pounds of torque (foot pounds or pound feet) translating to pushing thousands of pounds.
You burn 21 calories every 10 push-ups.
you are pushing up your own weight.
Over 9000!!
SAE 30 weight.
About 230.56 horsepower.
It depends on the size of engine it has
The question is not weight, it is the rolling resistance of the compartments, AND the traction of the engine on the rails. Think of this- I cannot pick up a car, but on level ground I can PUSH a car. And I weigh far less than my car.
It's safer. (Can still fly if one of the engine fails) And it can push more weight. (2 engines can help more weight get off the ground)
The average weight is 100-110 pounds depending on the size of the engine and if its clean or covered in grass or any other material
Yes, your current body weight definitely affects your ability to do push ups. When you are not strong enough to carry the weight you have on your body, your ability to do a push up is decreased.
A bulldozer won't be able to straight push a weight of soil, gravel, rocks, etc, too much heavier than the machine, without losing track traction. Such heavy loads would be pushed a smaller load at a time to prevent blowing the engine, or snapping the caterpillar-tracks.
It is the gap between the rocker arm and the push rod or valve in the head of the engine. How much it is varies with each model of engine.