TWO EQUALS...YET NOT!! I want to discuss why a tensional force on a block equal to the weight of block makes it move..though UNIFORMLY.
Suppose the block moves height h,by pulling the string in the upward direction, it gains a potential energy,thus we need to increase the force to move it in uniformly, thus, every fraction of second we need to increase the force applied.Now we cannot say that inertia keeps it moving in the required direction.So a force,GREATER THAN the weight force must be applied to keep it moving in upward direction. As my question was, why do we equate the force T to m*g although the block moved uniformly.
PLEASE ANSWER IT INTUITIVELY