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How can you tell if friction wastes more work on shorter or longer planes?
Friction wastes more work on longer planes because the distance over which friction acts is longer, resulting in more energy lost as heat. This leads to a greater decrease in the mechanical energy of the object moving along the plane.
How does reducing friction increase the mechanical efficiency of a machine?
Reducing friction decreases the amount of energy lost as heat during machine operation. This allows more of the input energy to be converted into useful work, improving the mechanical efficiency of the machine. Lower friction also reduces wear and tear on components, leading to less maintenance and longer machine lifespan.
What is a example of mechanical efficiency?
A very practical example of mechanical advantage is the use of a "cheater bar." If you find a bolt that is hard to break, simply slip a long pipe or similar object over the handle and it will apply much more torque.
What does mechanical energy transform to?
A body with mass in motion possesses kinetic energy. If it is subject to friction, either on a rough surface or through the air, some of this energy will be converted to thermal energy, ie it will heat up. An extreme example of this is the re-entry of space vehicles into the atmosphere. It could also be converted to potential energy, such as when you fire a bullet upwards, it eventually stops rising, partly because of friction but also because it is being pulled back by gravity.
What are the energy transfers of the six simple machines for example an incline plane is gravitational potential energy to mechanical energy. I want to know what are the other fives and for levers I would like to know class one and class 2?
\Delta E\Delta t\geq
How can you tell if friction wastes more work on shorter or longer planes?
Friction wastes more work on longer planes because the distance over which friction acts is longer, resulting in more energy lost as heat. This leads to a greater decrease in the mechanical energy of the object moving along the plane.
How does reducing friction increase the mechanical efficiency of a machine?
Reducing friction decreases the amount of energy lost as heat during machine operation. This allows more of the input energy to be converted into useful work, improving the mechanical efficiency of the machine. Lower friction also reduces wear and tear on components, leading to less maintenance and longer machine lifespan.
How is mechanical energy better than thermal energy?
Mechanical energy can be easily converted to other types of energy. Thermal energy is, to a great extent, wasted energy - it can no longer be converted to other types of energy.
Mechanical energy that has been lost to friction has actually been destroyed?
Nope. One of the strongest pillars of Physics is the fact that energy is never destroyed. Energy lost to friction is no longer available to do the job that you happen to need it for, but it's still there, and it shows up as heat.
What is a example of mechanical efficiency?
A very practical example of mechanical advantage is the use of a "cheater bar." If you find a bolt that is hard to break, simply slip a long pipe or similar object over the handle and it will apply much more torque.
What does mechanical energy transform to?
A body with mass in motion possesses kinetic energy. If it is subject to friction, either on a rough surface or through the air, some of this energy will be converted to thermal energy, ie it will heat up. An extreme example of this is the re-entry of space vehicles into the atmosphere. It could also be converted to potential energy, such as when you fire a bullet upwards, it eventually stops rising, partly because of friction but also because it is being pulled back by gravity.
If an alternator powers an electric motor that turns the alternator will there be extra usable energy?
No.All alternators, generators, and motors lose some of their mechanical and/or electrical energy to heat. The alternator converts mechanical energy into electricity, but some of that mechanical energy is also converted into heat (through friction and transmission loss), and the heat is lost to the environment. Similarly, an electric motor that converts electricity into mechanical energy also loses some of its energy to heat, also through friction and transmission loss. It is important to note that the energy is never truly lost - all the energy is accounted for - but the energy dissipated as heat is no longer available to the electrical / mechanical system.Let's assume that the motor and alternator are 99% efficient - that means that they lose only 1% of their energy to heat and transmission loss. You can imagine, then, that after a moment, there is only 99% of the energy left, and then 98%, then 97%, and so on until the system exhausts all of the energy through friction and transmission losses, at which point the system stops.NOTE: Purists will argue that an alternator actually needs a battery to initially generate electricity, and that the above discussion only applies to a generator - while true, that point is beyond the scope and relevance of the above discussion.
What are the energy transfers of the six simple machines for example an incline plane is gravitational potential energy to mechanical energy. I want to know what are the other fives and for levers I would like to know class one and class 2?
\Delta E\Delta t\geq
How does the length of a ramp affect its mechanical advantage?
The longer the ramp, the smaller the mechanical advantage. Mechanical advantage is determined by the ratio of the length of the ramp to its height. As the ramp gets longer, the ratio decreases, resulting in a lower mechanical advantage.
Which lever would have more mechanical advantage?
A longer lever would typically have more mechanical advantage than a shorter lever. Mechanical advantage is calculated by dividing the length of the effort arm by the length of the resistance arm; therefore, the longer the effort arm, the greater the mechanical advantage.
How does a wedge change an input force?
A change can happen when a mechanical advantage increases as it becomes longer and thinner.
Explain why all the stored energy in gasoline does not transform to mechanical energy of a vehicle?
In many processes, part of the energy is lost - in the sense of getting converted into an unusable form of energy. This is no exception. Specifically, when a substance is burned - in this case the gasoline - the chemical energy is converted to heat energy, which is a "lower grade" type of energy. That is to say, it is no longer possible to convert all the heat into other types of energy.
