Download brief push

Draw a force diagram for the object
below.
The box is raised at constant speed.
For 100 points
FT
Fg
Draw a force diagram for the
object below.
The box moves to the left at constant speed.
For 500 points
FN
FA
Fk
Fg
Draw a force diagram for the object
below.
A small child slides down a frictionless slide.
For 300 points
FN
FY
Fg
FX
Draw a force diagram for the object
below.
A skydiver falls at constant velocity (include air resistance)
For 1000 points
Fk
Fg
A block of dry ice resting on a table
is given a brief push. A moment
later, what forces are acting on the
block?
For 2500 points
• Normal force and the force of gravity
A block of dry ice resting on a table
is given a brief push. Describe the
motion of the block.
For 400 points
• The block moves at a constant speed.
What forces are acting on the block
(dry ice)?
For 100 points
• Towing force, normal force, and gravity
Describe the motion of the block
(dry ice)
For 10000 points
• The block accelerates constantly
When the block (dry ice) reaches
point B, the string breaks.
Describe the motion of the block.
For 50000 points
• The block moves at a constant speed.
Eventually, the block reaches the
edge of the table. After the block
leaves the table, what forces act on
the block?
For 1000 points
• The force of gravity
As a ball falls, consider one force to
be the pull of the earth on the ball.
What is the pair to this force?
For 100 points
• The pull of the ball on the earth
A horse exerts a 500 N force on a
heavy wagon, causing it to
accelerate. What force does the
wagon exert on the horse?
For 8000 points
• 500 N force
You’re in the back of a friend’s
pickup truck when it stalls on a hill.
You jump out, get behind the truck
and push with all your might (300
N). Still, the truck slowly rolls back
down the hill. The force the truck
exerts on you is:
For 200 points
• 300 N
When you first learned how to roller
skate, you may have gotten started
by pushing off the wall at the
skating rink. Draw a force diagram
for yourself as you accelerate.
Using agent-object notation, clearly
label all the forces acting on you.
For 300 points
FA
(wall pushing back on you)
FN (floor pushing up on you)
Fk
Fg (earth pulling down on you)
A sign hangs from a boom
supported by a cable connected
to a wall. The cable makes a
30° angle with the boom.
Sketch a force diagram for the
sign.
For 3000 points
FT
Fy
FA
Fx
Fg
The force of tension in the cable is
100 N. Find the mass of the sign.
For 400 points
Five kilograms
You push your lawnmower (mass =
15 kg) across the lawn at constant
speed. To do so, you must exert
120 N of force. The handle makes
a 35° angle with the horizontal.
What is the x-component of the
force you apply?
For 500 points
• - 98 N
You push your lawnmower (mass =
15 kg) across the lawn at constant
speed. To do so, you must exert
120 N of force. The handle makes
a 35° angle with the horizontal.
How does the frictional force
compare to the x-component of the
force?
For 200 points
• They are equal in magnitude, but in the
opposite direction.
You push your lawnmower (mass =
15 kg) across the lawn at constant
speed. To do so, you must exert
120 N of force. The handle makes
a 35° angle with the horizontal.
What is the normal force?
For 600 points
• 219 N
A sign hangs from a boom
supported by a cable connected to
a wall. The cable makes a 30°
angle with the boom. The force of
tension in the cable is 80 N. What
is mass of the sign?
For 300 points
• 4 kg