vectors weight and springs Flashcards
whats a contact force?
when objects are physically acting on eachother while touching
whats a non-contact force?
when objects are acting on eachother without touching
whats a scalar
a quantity that only has a magnitude (amount)
whats a vector
a quantity with an amount and a direction
how can a resultant vector be found?
by adding the values of the forces
how do you find a resultant vector when the forces are at a right angle
by maing a triangle and using pythagorus, so that the hypotenuse is the resultand vector value
what does it mean if forces are “balanced”
the forces add up to 0
wat happens if theres no resultant force
theres no acceleration
whats the defintition of weight?
the force gravity pulls an object down with
what does it mean if you pick up an object?
you must be pushing up with a force equal to its weight
what does work done mean?
energy transfered by a force
what’s hooke’s law?
force = spring constant x extention
what’s true of any object that returns to it’s original shape after being stretched?
it follows hooke’s law
what can be said about the relationship between force and extention?
it’s directly proportional
whats a systematic error in the spring practical?
measuring the whole spring instead of lining 0 up with where the extention starts.
whats a random error in the spring practical?
paralax errpr
