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P2- Force & Scale diagrams
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Gravity
Key Concepts:
Terms in this set (11)
What are the two types of force?
Contacting and non-contacting
What are the three non-contacting forces?
Electrostatic
Magnetic
Gravity
What is an interaction pair?
A pair of equal and opposite forces acting on two different objects
Give an example of a n interaction pair
A person leaning on a wall. - The person pushes the wall and the wall pushes the person
What is a resultant force?
It is the sum of all the forces acting on an object
What is a free body force diagram?
A diagram of a body with arrows drawn to show the direction and size of all acting forces
How will an object move if it is subject to a zero resultant force?
Either it will not move, or it will move at constant speed.
What will happen if a non-resultant force acts on an object?
It will either accelerate or decelerate
A man is moving north with a force of 4 N and the wind is pushing him sideways with a force of 3N. How would you calculate the size of the resultant force
Draw a right angle triangle where the sides are proportional to the forces, then measure the length of the sloping side
If an object is in equilibrium, what does this mean?
All the forces acting on it are balanced and cancel each other out.
What do you do if you resolve a force?
You split it into two forces acting at tright angles to each other
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