CH 3 Short Answer Flashcards
In mechanical systems, energy is most often lost as parts of the warm up due to what?
In mechanical systems, energy is most often lost as parts of the system warm up due to friction.
Energy may escape from mechanical systems through what?
Energy may escape from mechanical systems through excess vibration and unwanted sound.
What can you do to make a poor pulley system more efficent?
Move the Fulcrum
Mechanical Efficiancy will never be what?
100% or above
What is the formula for Mechanical Efficiency?
ME= output energy (or work)
——————————- × 100 %
input energy (or work)
= ___ x ___
—————
____x ____
= ___ N-m
—————-
___ N-m
= __.__× 100 %
= ___%
Why do we want machines to have a high level of efficiency?
We want machines to have a high level of efficiency so that we waste less energy performing everyday taks
How can lubricate increase mechanical efficiency?
lubricate increase mechanical efficiency because Lubrication reduces friction between moving parts, allowing them to move more smoothly and efficiently!
What are the advantages and disadvantages of customer support?
Advantages: helps customers when they have problems and makes them happy.
Disadvantages: it can take a lot of time and money for businesses to provide good customer support.
It can also be hard to make everyone happy and handle lots of questions.
What are the positivies and negatives of automation in the farming industry?
positives: it makes things faster and cheaper, and helps farmers grow more food.
negatives: it can be expensive and require special skills.
it can harm the environment. When farms rely heavily on automation, they may use more water, fertilizers, and pesticides than necessary. This can lead to pollution of soil and water, and can harm plants and animals.
What are the Benefits to Automation?
Machines can be used for repetitive and boring work. In factories, automation can produce more goods in less time with fewer materials. Dangerous tasks can be done with increased safety. Automation also has environmental benefits.
What are the Disadvantages to Automation?
Traditional skills may be lost as machine-made products replace handmade goods. When this happens, local communities may suffer. Unemployment often results when machines do the work that people can do. Increased demand for energy to run machines consumes additional resources and produces more environmental pollution.
In systems, energy can be lost when?
In systems, energy can be lost when it is transformed from one form to another
Complex machines ate made of?
Complex machines are made of many simple machines
