Question

A 20 years old person is unable to lift a 20 kg of gas cylinder. Another side he lifts up his girlfriend of weight 50 to 60 kg.why? ​

Answer 1

Answer:

cause interest matters most!!

u can do things easily in which u r interested

Answer 2

Answer:

Explanation:

its all about physics and bio mechanics.

The surface area in contact with your body while lifting a cylinder is pretty small, so when you lift it, it start paining your palm and it feels more heavier to you than it is actually. if you can lift a cylinder in same way you lift a girl using both of your arms, you will feel it is much lighter as compared to lifting a girl

when you lift a girl, the girl actually jumps a bit to make to able to put your arms underneath her knees so she does some work for you. that some work is hardest because part lifting a stationary object is more difficult than lifting an object already in motion towards the direction of your lifting action. If you lift the cylinder which is placed on a spring support, you will feel it lighter to lift as the initial part is done by the spring. if the girl is lying on the floor and cant do that initial jump, you will not be able to lift her and will feel how light is the cylinder as compared to girl.

when you lift a girl, she wraps her arms around your neck allowing you to balance your body, the more the distance of any object you are lifting and your body is, the difficult it is to lift that object. if you keep the cylinder near your body and bend your knees instead your back to reach the cylinder, you will feel that it is pretty easy to complete the lift rather than using your arms and lower back as your leg’s muscles are stronger than your arms muscles. when lifting a girl, you already are using your arms legs and complete back muscles in completing the lift but when lifting the cylinder, you are only using your arms to bear the weight thus making it more difficult a job. you can see how the cylinder delivery boy does the lift. he uses his legs and back to initiate a lift and then he kind of swing the cylinder to his shoulder, in this way he uses his entire body muscles to bear the weight of cylinder making it easier to do his job.

In a nutshell, if you try to lift a girl in same way you lift a cylinder, you will find the difference. by comparing lifting a girl with lifting a cylinder, you are actually comparing apples with oranges.

I hope I am making sense to you