Vocabulary
Magnitude and direction
What is a vector?
The force exerted on one surface by another when there is no motion between the two surfaces
What is static friction?
a2 + b2 = c2
What is the pythagorean theorem?
Ff stands for _______
What is the Force of friction
An object in equilibrium has three forces exerted on it. A 60-N force acts at 90˚ from the x-axis and a 22-N acts at 40˚ from the x-axis. What is the magnitude and direction of the third force?
*Rounding to the nearest whole
What is 76-N at 13˚?
Force that opposes motion of two objects that are touching
What is friction?
The force exerted on one surface by a second surface when the two surfaces rub against one another because one or both of the surfaces are moving
What is kinetic friction?
Opposite/hypotenuse
What is sine?
FN stands for ________
What is normal force?
An object has 5 forces acting on it while in equilibrium. A 30-N at 90 degrees from the x-axis, a 45-N at 180 degrees from the x-axis, a 67-N at 270 degrees from the x-axis, a 54-N at 0 degrees, and a 80-N at 108 degrees from the x-axis. Find the magnitude and direction of the forces.
What is 42-N at 68 degrees?
Force needed to make the net force zero; equal and opposite in direction
What is an equilibrant?
An example of ________ is when a table lamp is resting on a side table.
What is static friction?
Opposite/adjacent
What is tangent?
Fg stands for _______
Force of gravity
An object has two forces acting on it, a 42-N at 60 degrees from the x-axis and a 63-N at 180 degrees from the x-axis. Find the magnitude and direction of the resultant.
What is 163-N at 77 degrees?
Coefficient of friction
What is mew/mu?
When a car slams on their brakes, this is an example of _______.
What is kinetic friction?
Adjacent/hypotenuse
What is cosine?
R is the symbol for ______
What is the resultant
An object has two forces acting on it, one 84-N at 117 degrees from the x-axis and 43-N at 64 degrees from the x-axis. Find the magnitude and direction of the resultant.
What is 115-N at 10 degrees?
A vector that results from the sum of two other vectors; it always points from the first vector's tail to the last vector's tip
What is the resultant?
Friction is affected by ______ and ______
What is force between objects and surfaces touching?
Ff = (coefficient)(FN)
What is the friction force equation?
N is the symbol that represents _______
An object has six forces acting on it. A 92-N force at 180 degrees from the x-axis, 77-N at 270 degrees from the x-axis, 54-N at 305 degrees, 33-N at 88 degrees, 102-N at 220 degrees, and 84-N at 90 degrees. Find the ending resultant's magnitude and direction.
What is 83.6-N at 57 degrees?