summaries Flashcards
what is a force
it is a push or pull.
if a force can be exerted on an object it can
rotate direct changes
deform object comes to standstill
what is rotate
it mean to turn
what is a spring balance
is a simple device which contains spiral spring when stretched out it gives the reading of the force used to stretch
type of forces
contact force and non-contract force
what is a contract force
and type of force
objects touch another object ;
normal force
frition force
air resistance
appiled force
what is non-contract force
and what’s its other name
work over distance
field force
list other 3 non contract force
gravitational
magnetic
electrostatic
what is a gravitional force give example
objects attracts each other without touching eg
sun and planets
earth and moon
what is mass
meassured in
an amount of matter an object consist ofm(KG)
what is weight
weight of an object changes
it is that atrractive force that earth exerts on an object measured in (N) newton
what is the calculation formula
fg=w=mg
what is the moons mg
1.6 , which never changes when calculating moon
what is the earths mg
9.8 never changes when calculating earth
wat happens the the attraction force when it comes apart
decereases
