Flippin’
Switches
Team Project by:
Brittani Perez
Jared Smith
The Steps:
Design
-Weight raises the block using the pulley system
-Block hits the track and releases the metal ball
-Ball rolls through “roller-coaster” tubing
-Ball falls from tubing onto second track and knocks into the
lever
-The lever hits a free standing block
-The block hits a board which is suspended on springs
-A cylinder, which has a nail on it, rolls down after impact and
the nail hits another piece of wood
-That piece of wood knocks into the free standing books
-A domino effect with the books occur, and are knocked
onto the switch for the lamp
-When the switch is hit, the light goes….
Steps in Device
Step 1:
Potential Energy
Step 2:
Kinetic Engery and Rotational Energy (with solid sphere)
Step 3:
Angular momentum down the tube
Step 4:
Projectile Motion to second track
Step 5:
Torque as the ball hits the lever
Step 6:
Spring constant as block hits the board
Step 7:
Collisions of blocks to hit lamp switch
Stored Energy
Weight and Pulley
mgh = ½mv²
First Track
Center of Mass – Clamp and block are calculated to be a point mass, ball is
solid sphere
mgh = mgh + ½mv²
Rotational Track
mgh = ½mv² + ½Iw²
Circular Tube Path
mgh + ½mv² = mgh + ½mv²
Projectile Motion
Voy = Vo * sinѲo
Collision Equation
m1v1 = m1v1 + m2v2