The use of energy to apply a force to move an object. Work is defined as the amount of force multiplied by the distance the object moves.
The standard SI unit of energy, which is the ability to do work. It is defined as the energy used by a force of one newton moving an object a distance of one meter.
A device made up of one or two parts that reduces the effort neede to do work. It magnifies any applied force.
law of moments
For a lever with different amounts of weight on each side to be balanced, the distance that the first weight is from the pivot point multiplied by the weight, must equal the second weight multiplied by its distance from the pivot point. D(1)W(1)=D(2)W(2)
Torque is the turbning force acting on an object that is rotating or attached to a pivot point. It is the force multiplied by the distance of the force from the pivot point.
A type of lever where the fulcrum is between the effort force, and the resistance force.
second class lever
A type of lever where the resistance force is between the fulcrum and effot force.
A type of lever where the effort force is between the fulcrum and the resistance force.
wheel and axle
A simple machine that can be thought of as a lever that rotates in a circular manner aboutn and axle, which acts as a fulcrum.
Using mechanical advantage to reduce the force necessary to move something will result in an increase inthe distance that the force acts.
A simple machine that consists of a flat surface arranged at an angle so that one end is higher that the other.
1) the distance between the threads of a screw that determine its mechanicas advantage. 2) related to frequency, it is how high or how low our ears percieve a tone to be.
It is the rate at which work is perfomed, which is work done per unit of time, measured in watts.