First you must correctly solve for the normal force. 76sin20 is the vertical component of the applied force, not the normal force.hats_06 said:so if Ff= Uk.N...Then since Uk = 0.3 and N = 76.sin 20
Internal energy refers to the total energy stored in a system, including both its potential and kinetic energy. It is the sum of the microscopic energy of the particles within the system.
Internal energy is directly related to the temperature of a system. As the internal energy increases, so does the temperature, and vice versa. This is because an increase in internal energy means the particles within the system are moving faster, which raises the temperature.
Kinetic friction is the force that opposes the motion of an object as it slides over a surface. It is caused by the microscopic irregularities between the two surfaces that come into contact with each other.
Kinetic friction acts in the opposite direction of an object's motion, slowing it down and eventually bringing it to a stop. The amount of kinetic friction depends on the types of surfaces in contact, the force pressing the surfaces together, and the speed of the object.
Yes, there are ways to reduce the amount of kinetic friction between two surfaces. One way is to use a lubricant, such as oil or grease, to create a smoother surface between the two objects. Another way is to reduce the force pressing the objects together or to use materials with lower coefficients of friction.