Mass Flashcards
What is mass?
The mass of an object is a measure of the amount of matter it contains. The mass of an object is constant. It is the same on Earth, on the Moon and in space.
What is amount of matter?
An object’s mass is a measure of the amount of matter that it contains.
What is inertia?
An object’s mass is also a measure of how difficult it is to change the object’s motion.
True of false
An object with a high mass has more inertia than an object with a lower mass.
True
What is the name of the measure of how difficult it is to change an object’s motion?
Inertia
What’s the equation for weight
Weight = mass x gravitational field strength
What are the units for gravitational field strength?
Newtons per kilogramme, N/kg
How to find centre of mass in hanging objects?
If an object is hung from a string, it will hang with its centre of mass directly below the point that it is hung from.
Centre of mass - all in a single point
The centre of mass is the point through which an object’s weight appears to act.
Center of mass - toppling over
- An object will fall over if its centre of mass is outside its base.
- An object will fall off a surface if its centre of mass isn’t over the surface.
G - kg
1000 g = 1 kg
