Physics for Fun

This project was design by Issac, Hong Pok, zavier, Yi De and Ian Teo.

ice cream sticks, legos, rubber bands, tapes, scissors

take five ice cream sticks together to form one set of weights. The weight required is five ice cream sticks combine 4 sets of weight to create the base tape, two of the weights on top of the two other way on dot end then add add an food container to the bed to the late form a bit and cut two slits on the inside edge, perpendicular to the base of the food container. Mount it upside down.

Tocreate the catapult arm, you will require:

chopsticks

1 clean spoon

masking tape

4 lego technique bricks

8 gears

Steps:

Sub-section 1

Tape the spoon to the chopstick and wrap masking tape on it until firmly secure. Make sure it is firmly secured or it may fly while being used on the catapult.

Tape two chopsticks together to create the mid-arm and to create the catapult arm. The amount required is 2 sets of chopsticks. The arm connected to the catapult will need more reinforcement using tape.

Wrap 10 - 12 rounds of tape around the connecting of the gear, lego bricks, and the chopsticks. Next connect the lego brick to the chopsticks with extra rounds of tape. We would suggest duct tape as it is stronger, and it is a high stress point.

Sub-section 2

To create the launching unit, tape 4 ice cream sticks end to end to create one side. Repeat on the other side. You are advised to use stronger tape due to the high forces this point will need to withstand.

Put the end of the ice cream sticks into the two slits created in step 1, and tape it down firmly. Repeat this for the other side. Tape the top of both ice cream stick supports together at the top. This will create your main support structure.

Tape an ice cream stick horizontally across both ice cream stick supports on the 3rd ice cream stick from the bottom. Put your catapult arm unit through the support structure and on top of the horizontal ice cream stick. Once the arm unit is through, tspe another ice cream stick at the end to prevent the arm from slipping and falling back through the space.

Tape two ice cream sticks together and tape it onto the end of the launch arm in front of the catapult launch unit to form the launching bar.

Tape the launching bar to the end of the catapult unit arm with extra tape, in front if the catapult unit.

You will need two ice cream sticks. Tape down one on each side, parallel from each other, on the top of the catapult base. Make sure that it protrudes slightly out of the top of the food container.

Take two ice cream sticks held together and loop through at least 20 rubber bands. Tape it onto the two protruding ends of the previous ice cream sticks on top of the food container. Secure the two ends with lots of masking tape or duct tape.

Divide the rubber brands as equally as possible. Pull the catapult arm down slowly and loop one half of the rubber bands onto one end of the ice cream stick. Loop the other half of the rubber bands onto the other side of the ice cream stick.

Test and observe how the catapult works.