Question

what is the minimum force required to move an object in presence of friction

Answer 1

This depends on what forces are acting on the object already. For example, say the object of mass m is sitting on the ground, of friction coefficient k (relative to the object), on Earth which has gravity g.

The force required to push the object parallel to the ground is anything greater than the resistive force of friction, which is the normal force m*g times the friction coefficient k. So any force parallel to the surface the object is resting on exceeding m*g*k should be enough to push the object.

To lift the object you would merely need to exceed force due to gravity, m*g.

Basically, the object just have to have some net force in any direction, and it will move. So to directly answer your question, any amount of force greater than zero in a particular direction will move an object. By Newton’s second law f=ma force is the product of mass and acceleration, solving for acceleration a=f/m so any amount of force causes an acceleration.

In space if an object is sufficiently far from any gravitational bodies, or any other sorts of force, any amount of force in a particular direction will move the object.

I hope it help you
follow me

Answer 2

Answer:

1. This is dependent on the existing forces operating on the item. On assuming an object with mass m is sitting on the ground with friction coefficient k (relative to the object) on Earth with gravity g.
2. Anything more than the resistive force of friction, which is equal to the normal force m*g times the friction coefficient k, is needed to push the object parallel to the ground. Therefore, any force greater than m*g*k acting parallel to the surface the object is resting on should be sufficient to move the object.
3. We would just need to exert more effort than the force of gravity, m*g, to lift the thing. Basically, all an object needs to move is some net force in any direction. An object will move with any force greater than zero acting in that direction. From Newton's second law, which states that force is the product of mass and acceleration (f=ma), any amount of force will result in an acceleration (a=f/m).
4. Any quantity of force in a specific direction will move an object in space if it is sufficiently removed from any gravitational bodies or other types of forces. In the absence of friction, any force will cause an object to accelerate. The minimal force needed to move an item when friction is present is µsn, where µs is the coefficient of static friction and n is the normal force.

#SPJ3