Topic 5a - force basics (2. weight, mass and gravity) Flashcards
1
Q
what are important effects of the gravitational force
A
on the surface of the planet, it makes all things accelerate
gives everything a weight
2
Q
what is weight
A
it is the force acting on an object due to gravity. force is caused by gravitational fields.
3
Q
what does the weight of an object depend on
A
the gravitational field strength.
4
Q
what is weight measured in
A
newtons
5
Q
what is weight measured with
A
a calibrated spring balance (newton meter)
6
Q
what is mass
A
the measure of how much matter there is in an object where the location does not effect it.
7
Q
how to calculate weight
A
W=mg
