Gravity Flashcards
1
Q
All objects are…
A
Attracted to each other
2
Q
Forces of attraction increase when objects…? (2)
A
- have a larger mass
- are closer together
3
Q
What is weight?
A
The force acting on an object due to gravity
4
Q
What is weight measured in?
A
Newtons, n
5
Q
What is weight dependent on?
A
Weight of an objects DEPENDS ON gravitational field strength at the point where object is
6
Q
Weight equation?
A
W = mg
7
Q
What is the weight equation in terms of what each component is measured in?
A
N = kg x N/kg
8
Q
What is the value of g on earth?
A
9.8 N/kg
9
Q
What is the Centre of Mass?
A
CoM of an object is the point from which its weight can be considered to act
10
Q
3 differences between mass & weight?
A
Mass = measured in kg, scalar, does not depend on g Weight = measured in N, vector, proportional to g
