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Simple Machines
Calculations
Types of Forces
Units
Calculations, part 2
100
A screw is this type of simple machine.
What is an inclined plane?
100
A 15m seesaw has its fulcrum 3m from the resistance. What is its MA?
What is 4?
100
Unless it is made to move, an object will remain still due to this.
What is inertia?
100
Unit for work.
What is Joule (J)?
100
The force used to hit a 1kg ball 10m/sec/sec.
What is 10N?
200
Two or more simple machines put together.
What is a compound machine?
200
50J of work are put into a machine. The machine does 5J of useful work. What is the machine's efficiency?
What is 10%?
200
This force keeps objects moving in a circle.
What is centripetal force?
200
Unit for power.
What is Watt (W)?
200
The MA of an 18m seesaw that has its fulcrum 15m from its effort.
What is 5?
300
The handle of an axe represents this kind of simple machine.
What is lever?
300
A furniture mover uses 100N of foce to push a couch 5m across the floor. How much work is done?
What is 500J?
300
Force that opposes other forces and causes an object to slow down.
What is friction?
300
Unit for mass most commonly used in equations.
What is kg?
300
What is the MA of a 7m water wheel with a 1m axle?
What is 7?
400
This type of single pulley changes the amount of force.
What is a movable pulley?
400
If a person does 20J of work in 5sec, what is that person's power?
What is 4W?
400
Causes some objects to fall more slowly than other objects.
What is air resistance?
400
Unit for Mechanical Advantage?
What is none?
400
The power used to move 10 nails 1m in 2 seconds.
What is 5W?
500
The MA of an inclined plane is greatest when this is longer.
What is the ramp (length)?
500
The amount of force needed to accelerate a 50kg ball 10m/sec/sec.
What is 500N?
500
Acceleration due to gravity.
What is 9.8m/s/s?
500
Unit for acceleration?
What is m/s/s?
500
The work done to move a 100N piano 5m.
What is 500J?