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A 2.0 kg wood box slides down a vertical wood wall while you push on it at a 45 angle. What is the force applied to slide the box down at a constant speed?
The force applied to slide the box down at a constant speed is equal to the force of kinetic friction acting against the box. This force is given by the equation: friction force = coefficient of kinetic friction * normal force. Since the box is sliding down the wall, the normal force is equal to the weight of the box. Therefore, the force applied is equal to the coefficient of kinetic friction * weight of the box.
Can the coefficient of static friction be equal to the coefficient of kinetic friction?
No, the coefficient of static friction is typically greater than the coefficient of kinetic friction.
Why is it easier to determine the coefficient of kinetic friction if the object moves with a constant velocity?
When an object is moving at a constant velocity, it means that the forces acting on it are balanced. In this case, the force of kinetic friction is equal and opposite to the applied force, making it easier to calculate the coefficient of kinetic friction using the known values of force and normal force.
What is the coefficient of kinetic friction between a 400kg safe and the the floor when 760N are applied to the right?
The coefficient of kinetic friction can be calculated by dividing the force of friction (760 N) by the normal force between the safe and the floor. The normal force is equal to the weight of the safe, which is the product of the mass (400 kg) and the acceleration due to gravity (9.8 m/s^2). After finding the normal force, you can calculate the coefficient of kinetic friction by dividing the force of friction by the normal force.
If the applied force F on a block is increased gradually by adding more weights what happens to friction?
If the applied force is increased gradually by adding more weights, the frictional force will also increase initially to match the applied force. However, once the force of friction reaches its maximum value, it will remain constant and equal the applied force until motion occurs.
A 2.0 kg wood box slides down a vertical wood wall while you push on it at a 45 angle. What is the force applied to slide the box down at a constant speed?
The force applied to slide the box down at a constant speed is equal to the force of kinetic friction acting against the box. This force is given by the equation: friction force = coefficient of kinetic friction * normal force. Since the box is sliding down the wall, the normal force is equal to the weight of the box. Therefore, the force applied is equal to the coefficient of kinetic friction * weight of the box.
Can the coefficient of static friction be equal to the coefficient of kinetic friction?
No, the coefficient of static friction is typically greater than the coefficient of kinetic friction.
Why is it easier to determine the coefficient of kinetic friction if the object moves with a constant velocity?
When an object is moving at a constant velocity, it means that the forces acting on it are balanced. In this case, the force of kinetic friction is equal and opposite to the applied force, making it easier to calculate the coefficient of kinetic friction using the known values of force and normal force.
What is the coefficient of kinetic friction between the 13.0kg wooden crate and the horizontal force of 31N of the floor?
The coefficient of kinetic friction can be calculated using the formula: coefficient of kinetic friction = force of kinetic friction / normal force. The force of kinetic friction can be found using the formula: force of kinetic friction = coefficient of kinetic friction * normal force. Given the force of 31N and normal force equal to the weight of the crate (mg), you can calculate the coefficient of kinetic friction.
When a body slides over a surface the kinetic friction and static friction related as?
The kinetic friction is the force that opposes the motion of an object as it slides over a surface, while the static friction is the force that prevents an object from moving when at rest on a surface. Kinetic friction is generally weaker than static friction for a given surface.
What is the coefficient of kinetic friction between a 400kg safe and the the floor when 760N are applied to the right?
The coefficient of kinetic friction can be calculated by dividing the force of friction (760 N) by the normal force between the safe and the floor. The normal force is equal to the weight of the safe, which is the product of the mass (400 kg) and the acceleration due to gravity (9.8 m/s^2). After finding the normal force, you can calculate the coefficient of kinetic friction by dividing the force of friction by the normal force.
Is there a force that can go against friction?
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.
If the applied force F on a block is increased gradually by adding more weights what happens to friction?
If the applied force is increased gradually by adding more weights, the frictional force will also increase initially to match the applied force. However, once the force of friction reaches its maximum value, it will remain constant and equal the applied force until motion occurs.
How can the work-kinetic energy theorem explain why the force of sliding friction reduces the kinetic energy of a particle?
Work = change in Kinetic Energy Because friction acts in the opposite direction of the motion of an object, kinetic energy must be decreased in order to maintain the above equation. Friction opposes motion. Friction converts the kinetic energy of a particle into heat and sound.
Why might potential energy not equal the amount of kinetic energy at the end of a reaction?
Heat lose (usually friction).
Static friction is a self adjusting force explain?
i think that static friction is the friction onl because of mass and nature of the surface
What is required to get a stationary object moving?
An outside force is needed. If friction comes into play (which it likely will), the magnitude of the applied force must be greater than the force of friction acting upon the object in order for the object to move. FYI, the force of friction is equal to the coefficient of static friction times the normal force (equal to the weight of the object).
