Final answer:
To create a greater force against friction and move an object, you can add mass to the object or reduce the friction coefficient by using a lubricant. Overcoming static friction requires more force than maintaining motion against kinetic friction.
Step-by-step explanation:
To create a greater force and overcome friction when pushing an object like a crate across a surface, such as a wooden table or concrete floor, you can either increase the mass of the object being pushed by placing additional weight on it, or increase the adhesion between the surfaces, for instance by using a substance like oil to reduce the friction coefficient.
When you push an object like a crate, you're working to overcome the static friction that holds it in place. If you exert enough force to overcome the static friction, the object will start to move, transitioning to a state of kinetic friction, which is typically lower than static friction, making the object easier to keep in motion.
Making the surfaces rougher or increasing the mass of the object (e.g., by placing a box on top of the crate) will increase the frictional force, requiring a greater effort to achieve movement.