Forces 2 Flashcards
A force of 4 N acts on a lever 2 m from the pivot. What is the moment?
The movement is 6Nm
One way to increase the turning force on a spanner is to:
Use a longer spanner
Gravity is an example of what?
A non-contact force
What store of energy does friction always produce?
Heat
What is the pressure exerted by a man standing on one leg?
twice the pressure he exerts when standing on two legs.
The weight of a 100 N laser printer is spread over 0.5m2. What is the pressure it exerts?
200 N/m^2
What are the correct units of pressure?
Newtons per square meter
How do you calculate pressure?
Force divided by pressure
What are the correct units for force?
Newtons
What states of matter are fluids?
Liquids and gasses
Where is there greatest pressure?
In the bottom of the ocean
What is upthrust?
The force that water pushes floating objects up with
