Free-body Diagrams
The purpose of a free-body diagram
The circular velocity of a wheel with a circumference of 10 meters that makes 5 rotations every 10 seconds
What is 5 m/s?
Work: CV=(Cir×R)/T = (10×5)/10 = 5 m/s
The amount of matter in an object
What is mass?
The force that keeps a book from falling through a table
What is normal force?
The SI unit of force
What is a Newton?
The net force of an object at rest
What is a net force of zero?
The circular velocity of a car driving a 50-meter-long circular track (The car completes 1 rotation every 20 seconds)
What is 2.5 m/s?
Work: CV=(Cir×R)/T = 50(1)/20 = 2.5 m/s
The force that opposed motion between two surfaces
What is friction?
The force that opposes motion
What is friction?
formula for momentum
p = mv
the force that acts perpendicular to a surface in a free-body diagram
What is normal force?
The circumference of a bike wheel with a circular velocity of 2 m/s and a rotation time of .5 seconds per rotation.
What is 1 meter?
Work: Cir= (CV*T)/(R) = (2*.5)/1 = 1 m
Another name for Newton's 1st Law
What is the Law of Inertia?
The force that keeps an object moving in a circular path
What is a centripetal force?
the resulting speed of an object with no net force acting on it
What is constant/ it stays the same?
What a longer force vector represents in a free-body diagram
What is the force with a greater magnitude?
Circular acceleration of a spinning object with a circular velocity of 6 m/s and a rotation time of 2 seconds
What is 18 m/s2?
Work: CV2/t = 62/2 = 18 m/s2
The force that pulls objects toward the center of the Earth
What is gravity?
The force responsible for keeping planets in orbit around the sun
What is gravity?
The factor acting upon an object to cause a change in velocity
What is a force?
The forces included in a free-body diagram of a box being pushed across a surface
What is gravity, normal force, applied force, and friction?
The circular velocity of a Ferris wheel that rotates once every 2.5 minutes and has a circular acceleration of 3.6m/s2
What is 3 m/s?
Work: CV= sqrt(CA*T) = sqrt (2.5*3.6) = 3m/s
Describe the difference between mass and weight
Mass is the amount of matter in an object and does not change based on location, weight is the force of gravity acting on an object's mass and changes depending on the planet or location
The upward force acting on a rope with a suspended object
What is tension force?
Standard acceleration due to gravity on Earth
9.8 m/s2