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Work
Machines
Planes/Levers
Compound Machines
More Machines
100
When work is done on an object, we know
What is the object must move some distance as a result of the force.
100
A baseball bat can be considered a machine because....
What is it multiplies distance.
100
A slide on the playground and a ramp for a wheel chair are examples of an ...
What is inclined plane.
100
To calculate the mechanical advantage of a compound machine, you need to multiple the _______________ advantage of _________ machine together.
What is mechanical and each
100
Define mechanical advantage.
What is the ratio of output force to input force.
200
Power is measured in...
What is watts.
200
Identify 3 simple machines....
What is wedge, screw, inclined plane, levers, etc.
200
Levers in the body are found...
What is at the joints, like knees and elbows.
200
A ______________ is a common form of transportation as well as a compound machine.
What is a bicycle.
200
Name two examples of a wheel and axel...
What are a screwdriver and a doorknob.
300
For work to be done, what must happen?
What is force must be in the same direction as the objects motion.
300
The SI unit of measure used to measure work is...
What is a joule.
300
A fishing pole is classified as a ______ lever.
What is 3rd.
300
Work divided by time equals....
What is power.
400
Input work and output work are equal when...
What is there is no friction.
400
Machines make work easier by multiplying force or distance, or by....
What is changing direction.
400
The point that a lever pivots on is known as a...
What is a fulcrum.
400
If you exert a force of 50 newtons to push a block 5 meters, how much work do you do on the block?
What is 250 joules.
400
A wheel barrow and a nutcracker are examples of _________ levers.
What is 2nd class.
500
You do __________ on an book when you lift it from your backpack and put it on a desk.
What is work.
500
The mechanical advantage of a pulley is....
What is equal to the number of sections of rope that support the object.
500
If the ramp of an inclined plane is 25 feet long and the height of the ramp is 5 ft, calculate the mechanical advantage.
What is a MA of 5.
500
If the diameter of a wheel is 20 and the diameter of the axle is 5, what is it's mechanical advantage.
What is 25.
500
The basic purpose of an Archimedes screw is to .......
What is raise a substance (water or solid) from a lower to higher level.