Simple Machine
Does work with only one movement
What is a simple machine
You did 150 joules of work lifting a 120 newton backpack. How high did you lift the backpack?
1.25 meters
The formula for time
What is time= work/power
When using a simple machine, the output work can never be ______________then the input work
What is more
A motor does 5,000 joules of work in 20 seconds. What is the power of the motor?
What is 250 watts
Inclined plane that moves
What is a wedge
A bulldozer does 30,000 joules of work to life a boulder a distance of 25 meters. How much did the boulder weigh?
What is 1200 N
The unit of power
What is watts
The load, or the work a machine does to move an object over some distance
What is output force
A simple machine can multiply input forces or multiply input distances but . . .
What is never both at the same time
A flat sloped surface
What is an inclined plane
Work occurs when a forces causes an object to move in the ___________ direction that the force is applied
What is same
A vacuum has a power rating of 200 watts. If the vacuum does 360,000 joules of work, how long was the vacuum run in - minutes?
What is 30 minutes
The number of times the input force is multiplied by a machine
What is Mechanical advantage
The general formula for Mechanical Advantage
What is MA= Output Force/Input Force
An inclined plane wrapped around a cylinder
What is a screw
An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 meters. How much work was done by the ant?
What is none
A tractor pulls a wagon for 2.0 kilometers applying a horizontal 2,000 newton force on its hitch for 1 hour. What is the power of the tractor?
What is 1111.11 watts
A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?
What is 5
A pivot point on a lever is called a
What is fulcrum
Two circular objects of different sizes that rotate together
What is a wheel and axel
You decide to add up all the work you did yesterday. If you accomplished 10,000 newtons-meters of work. How much work did you do in the units of joules?
What is 10,000 joules
A machine uses 200 watts of power to move an object a distance of 15 meters in 25 seconds. Find the force needed and the work done by this machine.
What is Force= 333 newtons work= 5000 joules
A 5 meter ramp lifts objects to a height of 0.75 meters. What is the mechanical advantage of the ramp
What is 6.7
The unit of mechanical advantage
What is there is no unit