Transcript torque and circular motion quiz

Choose your own learning partners!
- 4 or less people per table
- Sit at a regular table, not a lab table
DO NOW:
You apply a force of 17 N at the end of a
0.25 m wrench. You pushed at an angle
of 75 degrees from the wrench.
1) Draw a picture that represents this
situation.
2) What is the torque that you applied?
I PUT DOWN A $250 DEPOSIT ON
A _____________ THIS WEEKEND.
A)
B)
C)
D)
E)
PIANO
CAR
HOUSE
ALL OF THE ABOVE
NONE OF THE ABOVE
I PUT DOWN A $250 DEPOSIT ON
A _____________ THIS WEEKEND.
A)
B)
C)
D)
E)
PIANO
CAR
HOUSE
ALL OF THE ABOVE
NONE OF THE ABOVE
Summative Quiz Today! Over
these learning objectives:
•Describe and calculate
uniform circular motion.
•Describe and calculate
torque.
Today’s agenda
1) Do now: TORQUE question.
2) Review last class’s torque
question.
3) Write equation sheets.
4) Cougar Races – review for quiz.
5) Last half of class: Quiz
UCM COUGAR RACES!
Please get in a group of 4 students.
3 minutes per question!
Write your answers on a dry erase board.
Show your work!
Number 1
• A satellite orbits the
earth in a clockwise
direction. Label the
radius, direction of
motion, acceleration,
and tangential velocity
at one point along the
circle.
Number 2
• The moon orbits the Earth at a distance
of 384,400 km. What is the total
distance of the moon’s orbit?
Number 3
• A sock stuck to the
inside of the clothes
dryer spins around the
drum once every 2.0 s
at a distance of 0.50 m
from the center of the
drum. What is the
sock’s speed?
Number 4
• A 70.5 kg pilot is flying a
small plane in a circular
path with a radius of
100.0 m. It takes her
0.16 seconds to
complete one circle.
What is the pilot’s
centripetal
acceleration?
Number 5
• A 70.5 kg pilot is flying a
small plane in a circular
path with a radius of
100.0 m. It takes her
0.16 seconds to
complete one circle.
What is the pilot’s
centripetal FORCE?
One More Concept!
• Torque is a measure of how much a force
acting on an object causes that object to
rotate
• Torque equals force times radius.
• T = Fr
Number 6
• A force of 5.0 N is applied
at the end of a lever that
has a length of 2.0 meters.
What is the torque acting
the lever?
Number 7
Calculate the force (WT) of the person on the
left. The beam is in rotational equilibrium (aka it
is balanced).
Please transform into
“QUIZ MODE”
• 1 person per table – 2 people per lab table
(sit on opposite sides of the table.)
• Phones must be put away – no music or
headphones.
• All notes and binders must be closed and put
away.
• Please remain at your testing seat until
everyone has completed the quiz.
• Turn in quiz to our class period shelf.