Free Body Diagrams
Give an example of a time when an object would experience a force labeled as Fapp.
Answers vary - check each other.
Look for an applied force where someone is pushing/pulling.
According to Newton's 1st law, this is required in order to make something change its motion.
What is force?
The symbol mu stands for this quantity.
What is the coefficient of friction?
What are :
- mass
- distance
If you were born on this date in 2005, how old would you be in years today?
What is 18 years old?
Give an example of a time when an object would experience a force labeled as FN.
Check each other. Answers will vary.
Look for an example that includes a surface pushing against an object.
According to Newton's second law, how much force would be required to make a 5 kg object accelerate at 2 m/s/s? (Include unit label)
What is 10 N?
The amount of friction force depends on these TWO factors.
What are:
- the coefficient of friction (types of surfaces)
- the normal force (the amount the surface is pushing on the object)
The gravitational force between two objects is 5 N. This would be the new value for gravity if the mass of ONE object was doubled.
What is 10 N.
In 2006, Nintendo launched this gaming console that was innovative in the ways that it incorporated physical movement into gameplay.
What is Wii?
Draw a free body diagram for an egg as it accelerates while it falls from the bleachers.
Check each other. Answer should include a box with arrows showing the force of gravity and force of air resistance. The arrow for gravity should be longer than the air resistance arrow.
According to Newton's 3rd law, this is how the size of the following forces would compare (>, =, <) :
Force 1: The force on the moon by the Earth
Force 2: The force on the Earth by the moon
What is the forces are EQUAL!
A 23 kg block slides across a horizontal surface. If the coefficient of kinetic friction between the block and the surface is 0.18, what is the force of kinetic friction that acts on the block?
What is 40.572 N?
The gravitational force between two objects is 20 N. This would be the new gravitational force if the distance between the objects doubled.
What is 5 N?
Within +/- 50 cents, this was the average price of a dozen eggs in 2006.
What is $1.31?
Draw a free body diagram for an ornament hanging on a tree limb.
Check each other.
Diagram should include a box with an upward tension force and downward gravity force (balanced).
If there are 8 N of applied force pulling a 25 kg box to the right and 2 N of friction acting against it, what is the acceleration of the box?
What is 0.24 m/s/s?
Note: Net F = 6 N, then use Fnet = ma
What force is necessary for Cody to push a 45 kg grocery cart across a horizontal surface at a constant velocity if the coefficient of kinetic friction between the wagon and the ground is 0.25?
What is 110.25 N?
Determine the force of gravitational attraction between a 50 kg and a 100 kg that are 3 m apart.
What is .000000037 N or 3.7 x 10-8 N ?
This was the name of a devastating hurricane that hit New Orleans (and other parts of the coast of Louisiana, Texas and Florida) during 2005.
What is Hurricane Katrina?
Draw a free body diagram WITH numbers that shows the values of each force for a 5 kg book that is at rest on a table.
Check each other. Should include a box with two forces:
Up: Fn = 49 N
Down: Fg = 49 N
A 2 kg object experiences 5N of air resistance. What is the acceleration of the object?
What is 7.3 m/s/s?
(Find Fg then Fnet, then use F=ma)
What is the acceleration that a 35 kg block experiences when a force of 80 N is applied to it as it slides across a horizontal surface? The coefficient of kinetic friction between it and the surface is 0.20.
What is 0.326 m/s/s?
To solve: First find Fg then use to find FK
Friction force = 68.6 N
So, net force = 80-68.6 = 11.4 N
Fnet = ma so 11.4 = 35a
a = 0.326 m/s/s
Determine the force of gravitational attraction between Jupiter and its satellite, Callisto. The mass of Jupiter is 1.99 x 1027 kg and the mass of Callisto is 1.08 x 1023 kg. The distance between them is 1.88 x 109 m.
What is 4.06 x 10 21 N?
Give a number (+/- 500): In the year 2005, Starbucks launched its ________ coffeehouse.
What is 10,000?