If i am holding a weight in my hand ,am i doing work ??If not ,then why do i feel tired??

Answer 1

NO, youre not doing any work, that is , if youre wanting to know the scientific answer. You see, in science work is moving an object by applying force (energy). So if your only HOLDING the weight and not moving it any distance, you're not doing any work. You feel tired becase you´re resisting gravity, which is pulling your hands and the weights. But to resist gravity, you need to use energy, and that's what you are wasting, causing you to get tired.

In conclusion, you are NOT doing any work and you feel tired because you are using energy to work against gravity.

Hope this helps and is not too confusing.

Answer 2

You are doing work because you are resisting the effect of gravity. The Earth is trying to pull the weight down with a force of 9.8 Newtons and you therefore have to apply the same force in the opposite direction. Take your hand away and watch the weight fall. Move you foot out of the way first!!!

Answer 3

Based on the scientific and technical definition of work, no, you are not doing work, because there is no movement done and no work accomplished. You are just "holding" the weight in your hand much like standing up doing nothing.

Answer 4

The weight that you hold makes you tired. It is a kind of exercise holding a weighty material for a long time. When we take exercises we feel tired.

Answer 5

dats the basic problem of the rule: u dont work if u dont move.
Imagine u are pressing a brick against a wall. the wall doesnt move, and so doesnt the brick, but u are applying force anyway

Now work= force*displacement
but displacement is zero, so work is zero

similarly in this case, work done is zero

Answer 6

You dont do work if you dont move it. It's gravity thats forcing the rock down on you. The force of your hand pushes the rock in the opposite direction that gravity is going.

Answer 7

The work you are doing is preventing the weight from falling to the ground (i.e. stopping the Earth acelerating the weight by gravity)

Answer 8

technically no. the equation for work is force * distance. but yet you are pushing it up against gravity. you feel tired because it is a weight and is heavy. yet maybe you holding it up against gravity is distance. i guess maybe, but technically no. check this out,

Answer 9

Yes, you are doing work.
You are affeccting the laws of gravity.
You are working against the weight to hold it up

Answer 10

You're not doing work, but you are exerting force!