why is it difficult to drag a chair or box on the floor? how can we move them easily from one place to another?
Answers
Explanation:
Assuming the floor to be level, the only force that you must exceed is the maximum static force of friction. The static force of friction, with no horizontally applied force, is zero, but increases as the horizontally applied force increases and is equal to it. This static force of friction has a maximum, for a given constant normal force between the chair and the floor. When the horizontally applied force exceeds this value by any amount, the sum of the horizontal forces is no longer zero and the object accelerates, aka starts moving. The friction is now generally reduced, also, because the kinetic force of friction is generally less than the maximum static force of friction.
Answer:
Because you are exerting static friction on the objects which are pulled in a floor. If you try by sliding friction by sliding the object then it will move easily because sliding friction is weaker than static friction.