work done if i do move the thing?

Question

In Physics, if I pull up something but it doesn't move, where does the energy go?

Answer 1

well you have not done any work but you have exerted a force but it was'nt greater than the frictional force required to pull the object. So to exert a force you need to energy so your energy is dissipated ehile exerting a force. I will give you an example suppose a truck is overloaded, above its maximum capacity so the motors are running(they are exerting a force) but unable to move it. However it is using fuel(energy), though it is unable to do work.( it needs fuel to make the motor run). So energy is used but no work is done and some amount of energy is given out as heat.

Answer 2

according to the newtons third law, for every action there is an equal and opposite reaction. in that sense, the thing u want to pull up exerts pressure which is equal to the force u apply. it can be denoted as-
F=F*
ma=mg
so for some extent this rule is followed. if more force is applied, then the object can be pulled up. this force is called as the limiting force.

Answer 3

You might get exhausted, but in the sense of physics, no work has been done. You have done some motionless exercise, and alot of energy is dissipated as heat.

Answer 4

NO WORK IS DONE AS THE FORCE APPLIED BY YOU COULDN'T OVERCOME THE FORCE EXERTED BY THE OBJECT AS A REACTION