1. a box at rest on a level table. weight normal balancedunbalanced
TRANSCRIPT
1. A box at rest on a level table.
Weight
Normal
Balanced UNbalanced
2. A box being dragged to the right at a constant speed on a level surface.
Weight
Normal
Balanced UNbalanced
PullDrag
3. A crate accelerated to the right on a level surface.
Weight
Normal
Balanced UNbalanced
PullDrag
4. A box moving to the right on a level surface and sliding to a stop.
Weight
Normal
Balanced UNbalanced
PullDrag
4. A box moving to the right on a level surface and sliding to a stop.
Weight
Normal
Balanced UNbalanced
Drag
OR
5. A box at rest on an incline.
UNbalancedBalanced
Weight
Normal
Friction
Wt acting down incline
(Wt )
Wt acting against incline(Wt )
6. A box sliding down an incline at 2 m/s.
UNbalancedBalanced
Weight
Normal
Friction
(Wt )
(Wt )
UNbalancedBalanced
7. A rock free falling off the side of a cliff.
Weight
Air Drag
UNbalancedBalanced
8. A hovering helicopter.
Weight
Lift
UNbalancedBalanced
9. A helicopter accelerating upward.
Weight
Lift
UNbalancedBalanced
10. A helicopter accelerating downward.
Weight
Lift
UNbalancedBalanced
11. An airplane in level flight moving forward at 400 km/hr.
Weight
Lift
DragThrust
UNbalancedBalanced
12. An airplane in level flight and speeding up.
Weight
Lift
ThrustDrag
UNbalancedBalanced
13. An airplane climbing at a constant speed.
Weight
Thrust
Air Drag
UNbalancedBalanced
14. A large box being pushed against a vertical wall.
Box PUSHED up against wall
Wall PUSHING back on box
Weight
Normal
FLOOR
WALL
UNbalancedBalanced
15. A person standing in an elevator that is not moving.
Weight
Floor pushing up
UNbalancedBalanced
16. A person moving upward in an elevator at a constant speed.
Weight
Floor pushing up
UNbalancedBalanced
17. A person accelerating upward in an elevator.
Weight
Floor pushing up
UNbalancedBalanced
18. A person moving downward in an elevator at a constant speed.
Weight
Floor pushing up
UNbalancedBalanced
19. A person moving upward in an elevator that is slowing down to a stop.
Floor pushing up
Weight
UNbalancedBalanced
20. A satellite that is orbiting the earth at a constant speed.
Weight