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Mechanical energy that has been 'lost' to friction isn't really lost It just is no longer in its mechanical form?
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∙ 14y ago
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∙ 14y ago
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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.
How would the mechanical advantage of a dart change if the tip was longer and thiner?
try to do by your self
What can you do to an inclined plane to increase its mechanical advantage?
Decrease the angle to the horizontal. This is done by making it longer.
What could be done to increase the mechanical advantage of an inclined plane?
It decreasesThe greater the angle, the steeper the inclination, the less effective it is. The greater the horizontal distance traveled for every unit length of height gained, the greater the mechanical advantage. GO Michael cooper repersentin Monticello
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.
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.
How does a wedge change an input force?
A change can happen when a mechanical advantage increases as it becomes longer and thinner.
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.
Why does a longer bicycle ramp have better mechanical advantage than a shorter one?
Mechanical advantage is defined as the input force divided by the output force. If both ramps have the same final height, the longer one will generally have the greater mechanical advantage because it requires less overall work from the cyclist to raise the bicycle to a higher potential energy in a uniform gravitational field. The limit to this exists where the ramp becomes so long that it actually takes more energy to traverse than the short since you must account for the work required to maintain forward motion against friction and the climb against gravity. This limiting distance is related to the final height of the ramp.
How can you use the science term mechanical in a sentence?
The engineers created a mechanical arm for the soldier that lost an arm in battle. The kids like mechanical pencils because they stay sharp longer than the regular ones. My teenager enjoys building things and he wants to study mechanical engineering in college. The airplane crashed due to a mechanical problem.
Why does the mechanical advantage chance if it becomes longer and thinner?
Try to do by your self.
How would the mechanical advantage of a dart change if the tip was longer and thiner?
try to do by your self
How do you increase the mechanical advantage of a wedge?
The spokes of a wheel are comparable to levers. Longer spokes give more mechanical advantage. Even in a wheel that is solid, and has no spokes, the greater the diameter, the greater the mechanical advantage.
Why do artificial hearts longer than heart transplants?
Because the valves are mechanical, it's not the same as a regular human heart. The regular human heart doesn't last as long as the mechanical heart because the real heart has a shorter lifespan. Eventually the heart gives out, but when it is a mechanical heart, it lasts longer than an real heart. I believe that is the reason why.......
