Types of forces Flashcards
Name the three motions of forces
Pull, push, twist
A definition of a force
A force is a pull,push or twist that acts on an object due to the interaction with another object
What is a contact force?
When objects are physically touching each other
What are Non contact forces?
When the objects are physically separated
Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
Thrust
Thrust is a reaction force described quantitatively by Newton’s third law. When a system expels or accelerates mass in one direction, the accelerated mass will cause a force of equal magnitude but opposite direction, to be applied to that system
Gravitational force
Is the force applied using the law of gravity, which brings your body downwards.
Magnetic force
A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field
Electrostatic force
The electrostatic force is an attractive and repulsive force between particles are caused due to their electric charges. The electric force between stationary charged body is conventionally known as the electrostatic force. It is also referred to as Columb’s force.
Upthrust
Is when an object in a liquid or gas goes upwards
Tension
In physics, tension is described as the pulling force transmitted axially by the means of a string, a cable, chain, or similar one-dimensional continuous object, or by each end of a rod, truss member
Air resistance
Air resistance is a force that is caused by air. The force acts in the opposite direction to an object moving through the air.
Vector
An arrow
What direction does the arrow point in?
It points in the direction of the resultant force, which is when if there are forces acted on both sides of an object the larger one is the resultant force
What are forces measured in
Newtons (N)
What are the measurements of the forces often represented as?
They are often put in boxes
What happens if both forces are equal?
You add the two forces together to cause a resultant force
What is a resultant force?
A resultant at force is the larger force between to forces, so you take the smaller force away from the larger force to calculate the resultant force.
What happens if the resultant force is zero?
The force is called balanced forces.
What happens if there is a difference between the two forces?
Then the two forces are stated as unbalanced
What happens if an object is equilibrium?
It will stay stationary
It will stay same speed and same direction
What happens if there is a change in motion?
It could change direction
It could accelerate
It could decelerate
What are flow charts used for?
It helps you to know if forces are or aren’t balanced
Can forces make things change shape?
Yes forces can make things change shape, depending on the state of the object
Thrust and Friction are opposites
Also, air resistance and weight are opposites
What is mass measured in?
Grams or kilograms
What is weight measured in?
Weight is measured in Newtons
What happens if you apply tension to a spring?
It will change shape and will become longer.
What happens when someone applies a force to a sponge?
The more force applied the less thick it will be
What was the independent variable, to their experiment?
Force applied to the sponge
What was the dependent variable, in their experiment?
The thickness of the sponge.
What were the three control variables, for their experiment?
The type of sponge used
The shape of the weights
The surface under the sponge
When on a line graph there is a result which is far of all the rest what do you call it.
Anomalous result
