0
What else can I help you with?
What is the world's useful machine?
What the most useful machine is, is a matter of opinion. Some would argue that the wheel is the most useful machine, and others would argue that the lever is the most useful.
What simple machine would be most useful for moving a heavy box up and down a hill support the anwer?
A pulley
What simple machine would be useful to get supplies up to a tree house?
Use a pulley and a rope and a flat piece of wood or a bucket:)
When the useful energy output of a simple machine is 100 J and the total energy input is 200 J the efficiency is .?
The efficiency of the simple machine is calculated as the useful energy output divided by the total energy input, multiplied by 100%. In this case, the efficiency would be (100 J / 200 J) x 100% = 50%.
Is it possible to use a simple machine and do less work than you would have done without the machine?
That isn't possible, not with a simple machine and not with a complicated machine, since otherwise, conservation of energy would be violated.
If you want a board to stay attached to a tree as a step for your tree house which simple machine would be the most useful?
A wedge would be the most useful simple machine for securing a board as a step for your tree house. By driving the wedge into the tree, it can create a tight fit that helps hold the board in place. Additionally, using screws or nails, which function as wedges, can further secure the board to the tree, ensuring stability and safety.
What simple machine would you use to move a rock?
no
Which simple machine would stairs be an example?
a wedge
Is a wheel and axle a compound machine?
No. Gears are a type of simple machine. Combined with another simple machine, it would then make a compound machine.
What type of simple machine would be used to hold two boards togather?
A screw is the simple machine which holds two boards together. In this case it is not acting as a machine though.
Name one complex machine and a simple machine?
a complex machine would be a car, but a simple machine would be a wheel and axle. an example of a wheel and axle would be a steering wheel
Is a hovercraft a simple machine?
Yes, a hovercraft is considered a simple machine because it uses principles of physics like air pressure to generate lift and propel itself forward. It does not have complex mechanisms like gears or engines.
