Simple Machines Flashcards
What is a simple machine?
A simple machine is a device that changes the direction or magnitude of a force and has few or no moving parts.
What are the different types of simple machines?
The six basic types are:
- Lever
- Pulley
- Inclined plane
- Wedge
- Screw
- Wheel and axle
What is mechanical advantage (MA)?
Mechanical advantage is the ratio of the output force to the input force in a machine.
What is the formula for mechanical advantage?
MA = Output Force / Input Force
What is velocity ratio (VR)?
Velocity ratio is the ratio of the distance moved by the effort to the distance moved by the load in a machine.
Q: What is the formula for velocity ratio?
VR = Distance Moved by Effort / Distance Moved by Load
What is the efficiency of a machine?
Efficiency is the ratio of the useful work output to the total work input, expressed as a percentage.
What is the formula for efficiency?
Efficiency = (Mechanical Advantage / Velocity Ratio) × 100%
