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What effect does friction have on a machines efficiency?
Efficiency of the machine is reduced due to loss of energy by friction.
How does friction affect the energy in a closed system of moving parts?
Friction affects the efficiency of a system since two objects rub against each other. When this happens, there is created which reduces the energy in the system.
How does friction affect energy transformations?
It cause degradation of energy transformation. In other word, it loss the efficiency through friction.
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.
How does friction affect an oject's motion?
It reduces it by converting kinetic energy into heat.
Friction reduces efficiency because energy is lost?
Yes, exactly.
Friction reduces efficiency because energy is lost as what?
Mainly as heat (thermal).
What effect does friction have on a machines efficiency?
Efficiency of the machine is reduced due to loss of energy by friction.
Why does friction reduce the efficiency of machines?
Friction requires energy to overcome it. This causes loss of energy in the system. Loss of energy in a system, by definition, is a reduction of efficiency.
How does friction affect the energy in a closed system of moving parts?
Friction affects the efficiency of a system since two objects rub against each other. When this happens, there is created which reduces the energy in the system.
How does friction affect energy transformations?
It cause degradation of energy transformation. In other word, it loss the efficiency through friction.
Decreases efficiency by causing an energy loss to the environment.?
Friction
How do lubricants increase a machine's mechanical efficiency?
A pulley has a center axle around which it rotates. A rope passes over the pulley and is attached to the load. In an ideal pulley the work done in lifting the load is exactly the same as the energy expended. In a real pulley, because of the friction, we need to spend more energy in lifting the load. The additional energy is dissipated, i.e., wasted in the friction. Adding a lubricant to the shaft of the pulley reduces the friction and therefore increases the efficiency. A very thin layer of oil (lubricant) in between the moving and stationary parts can reduce friction very significantly.
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 friction should be reduced?
friction is a necessary evil for the man-kind although it has many advantages it also carries any dis-advantages with it which are discussed below :-. 1. it reduces the efficiency of any machine, as some of the energy is lost due to friction as heat energy.So the energy reaching the output would be {input energy - frictional energy} 2. it causes wear and tear of machines. 3. produces unnecessary heat.
What decreases efficiency by causing an energy loss to the environment?
Friction causes a loss of heat to the surroundings and decreases efficiency.
How does friction affect an oject's motion?
It reduces it by converting kinetic energy into heat.
