9.1-9.10 Forces and their effects Flashcards
Give two examples of how an object can interact at a distance without touching
.Gravitational Attraction
.Electrostatic attraction/repulsion
.Magnetic attraction/repulsion
How can an object be gravitationally attracted?
.An attraction between two objects with mass, the larger the mass the greater attraction
How can an object interact by electrostatic?
.A larger charge gives greater force
.Like charges repel, opposite charges attract
How can an object interact magnetically?
.A stronger magnet has a stronger field giving a greater force
.Like poles repel, opposites attract
Give two examples forces interacting with contact
.Normal contact force
.Friction
How is Friction caused?
When rough surfaces are moved
What does a vector have?
A size and direction
Give two examples of a vector
.Weight
.Velocity
.Force
.Displacement
Give two examples of a scalar
.Mass
.Distance
.Speed
Give the four reasons a force can cause a rotation
.If an object is attached to a pivot point
.And a force is not applied to the point
.If the force is applied perpendicular to the object
.If the force is applied not perpendicular to the object
What can gears change by rotation?
.Speed
.Force
.Rotation
If the first gear is supplying the force what will happen if its connected to the gear with fewer teeth?
.The second gear will turn faster
.But with less force
.In opposite direction to the first gear
If the first gear is supplying the force what will happen if its connected to a gear with more teeth?
.Turns Slower
.More force
.Opposite direction
How can you reduce unwanted energy transfer with gears?
Use lubrication
What direction will the second gear always turn in?
The opposite direction
