Topic P5 - Resultant Forces And Work Done Flashcards
What is a resultant force?
A resultant force is the overall force on a point or object
How many forces are acting on each other in a real situation?
At least two forces
What is work done?
Work done is when a force moves an object through a distance, energy is transferred and work is done on the object.
How do you make something move?
To make something move a force must be applied.
The thing applying the force will need a source of energy (like fuel or food)
An example of work done would be…
If you push something along a rough surface (like a carpet) you are doing work agains a frictional forces. Energy is being transferred to the kinetic energy stores due to friction. This causes the overall temperature of an object to increase.
Work done equation is…
Work done (j) = Force (N) x Distance (m)
The conversion of joules to newton meters is…
1 J = 1 Nm
