forces Flashcards
what is force
a push or pull that acts on an object due to its interaction with its surroundings
give examples of contact force
- friction
- air resistance
- tension
- normal contact force
gives examples of non-contact forces
- gravity
- magnetic
- electrostatic
what is a free body diagram
a diagram that shows all the forces acting on an object with arrows
what is resultant force
the overall force on an object
what is equilibrium
when all the forces acting on an object balance out
what are the two different types of deformation
- elastic = when an object returns back to its original shape
- inelastic = when an object doesn’t return back to its original shape
what is extension
increase in length of a string when it’s stretched
what is spring constant
how many newtons it would take to stretch the object by 1m
what does Hooke’s Law state
that the extension of an object is directly proportional to the force applied
what happens when an object passes its limit of proportionality
it will start deforming inelastically
what is moments
the rotational or turning effect of a force
what do levers do
transmit the turning effect of a force
what do gears do
transmit turning force
when two gears are connected what direction do they move in
opposite directions
