Simple Machines
An inclined plane wrapped around a cylinder
What is a Screw
The ideal mechanical advantage is a theoretical situation where a machine will give 100 percent output in the absence of _______
What is friction
The class of the lever is identified by the location of the _____
What is the fulcrum?
Input distance divided by output distance
What is the IMA
Force exerted on a machine
What is input force?
An axe is an example of this simple machine
What is a wedge
Because of friction, the ______ is always less than the ideal mechanical advantage.
The fulcrum is always between the effort force and the resistance force (like a teeter-totter) in this class lever.
What is a first-class lever?
Dividing work output by work input
what is efficiency?
The number of times that the machine increases the input force is known as this
What is the mechanical advantage?
A steering wheel on an automobile is an example of which simple machine
What is a wheel and axle?
True or False:
Calculating the ideal mechanical advantage is affected by friction
What is false?
A wheel barrow is an example of a wheel and axle and this class lever
What is a second-class lever?
Unit for Work
What is the Joule
By adding a lubricant to a simple machine the efficiency will increase because of this
What is reducing friction?
Two or more simple machines makes a _______
What is a compound machine
The IMA of a pulley system is equal to this
What is the number of rope segments supporting the load?
The class of lever where the effort force and resistance force are on the same side
What is a third-class lever
Power is measured in this
What are Watts?
The work input is equal to the work output in this type of pulley
What is a fixed pulley?
A machine is a device that can multiply _______
The IMA of a wheel and axle is found by dividing the radius of the ______ by the radius of the _______
What is the wheel by the axle?
What is a first-class lever?
The rate at which work is done
What is Power?
The IMA is 2 because the work input is half of the work output in this type of puley
What is a Moveable Pulley?