friction is an important force to have in life because friction helps objects that move or roll stop. Like brakes on a car, when you push down on the brakes the friction is there when the wheels stop,and the car will stop to.
Yes they are equal because they are both forces and when the thrust of planes (for example) are high in the air, the thrust pulls the plane forward. While the friction force pushes the plane forward. Think of it as someone pushing you towards something that you don't want to go into, that is the same as thrust and friction forces because the thrust is pushing you forward and the friction force is the balance of it all.
You would need friction between the tires or tracks and the dirt the tractor is sitting. If you have extended legs, you need friction between the pads and the ground. You would want friction in the brakes. A clutch also relies on friction. Technically you could "dig water", but if you are trenching, then one needs friction between the dirt particles. It is also handy to have friction in your seat, steps, and controls.
the washer should be used where the exact matching between nut and bolt is required and also the chances of vibration is frequently occurring the washer is mainly used to make a good contact between the surfaces. the friction force occurring between the washer and the plate is so large because of u0 (co efficient of friction) . that it absorbs the vibration.
The coefficient of kinetic friction between wool felt and aluminum is about 0.24 to 0.26.
You need to know both material involved in the friction to find the coefficient
An important formula is that friction = (coefficient of friction) x (normal force).
The friction force vs normal force graph shows that there is a direct relationship between the friction force and the normal force. As the normal force increases, the friction force also increases. This indicates that the friction force is proportional to the normal force.
To find the friction coefficient in a given system, you can use the formula: Friction coefficient Force of friction / Normal force. The force of friction is the force resisting the motion of an object, and the normal force is the force exerted perpendicular to the surface the object is on. By dividing the force of friction by the normal force, you can calculate the friction coefficient.
Statical friction
The friction vs normal force graph shows that there is a direct relationship between friction and the normal force. As the normal force increases, the friction force also increases. This indicates that the friction force is dependent on the normal force acting on an object.
The force acting on an object increases the friction between the object and the surface it is on. As the force increases, the friction force also increases proportionally until it reaches a maximum value, called the limiting friction. This relationship is described by the equation: friction force = coefficient of friction * normal force.
No. Friction can only slow an object down. If friction were imparting a force greater than that of the applied forces, then friction in and of itself would actually be causing the object to move, which does not happen.
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
and because we would float off into space
The reaction force to the friction acting on the car is the friction force acting on the road. It acts on the car in the opposite direction to the friction force acting on the car.
The Force of friction is equal to the coefficient of friction times the normal force. Since normal force is equal to mass times the acceleration of gravity (9.8 m/s2), the force of friction is directly proportional to the mass.
Sliding friction requires more force to overcome its friction.