Friday, January 29, 2016

Motors

Copper is not magnetic
A motor works by using electromagnetism to continually spin the wheels on the car without any external help besides a magnet and a closed loop. it works by having an insulated side of the copper wire and a exposed side so it can rotate properly, the wire itself is not magnetic but the electrons inside the wire from the closed loop cause it to have a electromagnetic field which has an attraction to magnets causing a magnetic field.
The stronger the magnet and bigger the coil of copper the faster it will spin and the stronger because it has a stronger attraction to the electromagnetic field. 

Tuesday, January 26, 2016

Electromagnets lab

Main activity
Uncovered copper is stronger for an electromagnet as it only took 13 coils of tightly wrapped copper to pick up 4 paperclips, but it took 20 coils of the covered wire to carry only 1, lower temprature electromagnet has better magnetic potential as observed, after using a nail for an electromagnet it gets magnetic properties, tightly grouped coils also seem to make the electromagent stronger, stronger cores in the metal affect how strong the electromagnet

Pre-Activity
Once a compass is near a full circut it starts to move out of control despite not moving, this can be explained by the magnet field surrounding the wire.

Monday, January 25, 2016



How friction affected my machine
Friction affected my machine by making my pulley slower, and slowing down my cars, but it also help them start up, it also slowed the marble while passing through the screw, and how fast the cup with the marbles fell too, it also made the middle of my pulley slightly hotter as it created thermal energy with the cylinder and the string.

newtons law of motion in the machine
It shows that the machine stayed intact until i pushed the Cup down causing it to slide on the incline plane hitting the dominoes (level) causing a chain reaction. at the same time working as a pulley to pull the car (wheel and axle) and another incline plane. The dominoes also hit the marble causing it to fall down the funnel (screw) positioned on top of more dominoes causing them to fall in a chain reaction (lever) hitting the car causing it to move (wheel and axle) getting stopped by the triangle (wedge) because it separates the car from the ground causing a splitting motion. It all follows the 1st law in that everything stayed intact until i pushed a cup.

Thursday, January 14, 2016

https://docs.google.com/document/d/1SrNyAZuEXepcT-wGC2QXc_VgGWpo5DBWlRLL-C84aik/edit