force lab stations- 02.27.2013
Station 4:
The unbalanced forces were at the hills, because gravity is pulling the coaster down, and the track was pulling the car up. The balanced force was at the beginning, when the coaster wasn't moving yet.
The unbalanced forces were at the hills, because gravity is pulling the coaster down, and the track was pulling the car up. The balanced force was at the beginning, when the coaster wasn't moving yet.
Station 1:
The marble takes a circular path along the edge, because the plate is slanted down on the end, and then it has a high edge.
If I spun the marble along the edge with the section removed, the marble would fall out of the removed section, because gravity would pull the marble down with nothing to hold it up.
1) How does the edge of the plate exert a force on the marble?
The edge of the plate pushes the marble away from the side, so it wont go over the edge.
2) How does this activity model the movement of planets in our solar system?
It is going in a circular motion around a centered point.
3) How can this model the Moon's movement around Earth?
This model shows the movement of the moon around earth, because it rotates and revolves simultaneously.
Station 2:
Tug of War Springs
The marble takes a circular path along the edge, because the plate is slanted down on the end, and then it has a high edge.
If I spun the marble along the edge with the section removed, the marble would fall out of the removed section, because gravity would pull the marble down with nothing to hold it up.
1) How does the edge of the plate exert a force on the marble?
The edge of the plate pushes the marble away from the side, so it wont go over the edge.
2) How does this activity model the movement of planets in our solar system?
It is going in a circular motion around a centered point.
3) How can this model the Moon's movement around Earth?
This model shows the movement of the moon around earth, because it rotates and revolves simultaneously.
Station 2:
Tug of War Springs
Data Table ^
Example 1 ^
Example 2^
Example 3
Station 3:
1) Why does the tennis ball fall from your hand to the table?
The tennis ball falls from my hand to the table because gravity pulls it down.
3) At about 3 inches up: the ball falls but then moves up and down over the air
When the blow dryer is slowly moving to 90 degrees, the ball moves with it sideways, but at about a 45 degree angle, the ball falls and bounces to the table.
Questions:
1) What two forces are exerted on the ball during the investigation?
Gravity and Air resistant.
2) Are the two forces balanced?
No, you can tell because the ball moves up and down as gravity pulls it down, and air pushes it up.
3) What do you think happens to an object when forces are balanced?
The object stands still or moves at a constant rate.
4) What do you think happens to an object when forces are unbalanced?
Station 3:
1) Why does the tennis ball fall from your hand to the table?
The tennis ball falls from my hand to the table because gravity pulls it down.
3) At about 3 inches up: the ball falls but then moves up and down over the air
When the blow dryer is slowly moving to 90 degrees, the ball moves with it sideways, but at about a 45 degree angle, the ball falls and bounces to the table.
Questions:
1) What two forces are exerted on the ball during the investigation?
Gravity and Air resistant.
2) Are the two forces balanced?
No, you can tell because the ball moves up and down as gravity pulls it down, and air pushes it up.
3) What do you think happens to an object when forces are balanced?
The object stands still or moves at a constant rate.
4) What do you think happens to an object when forces are unbalanced?