Praktikum Fisika - Membuat Kapal Selam Sederhana Untuk Membuktikan Prinsip Hukum Archimedes

Summary

This engaging tutorial demonstrates how to create a simple submarine using a plastic bottle and tubing, effectively illustrating Archimedes' principle. The process begins with preparing the bottle, drilling holes, and attaching tubing of varying lengths. As the submarine is submerged in water, the viewer learns how to manipulate air pressure to make it sink and rise. The hands-on project combines creativity with scientific exploration, making it an exciting activity for learners interested in physics and engineering.

Takeaways

• 😀 The project requires a plastic bottle, a lighter, a nail, and tubing.
• 🔥 Start by heating the nail and using it to make two holes in the plastic bottle cap.
• ✂️ Cut the tubing into two parts: one shorter and one longer.
• 📏 Cut the plastic bottle in half for assembly.
• 🔗 Insert the tubing into the holes in the bottle cap.
• 🩹 Secure the inner tubing with tape to prevent leaks.
• 🔌 Connect the two parts of the bottle using tape to create a sealed structure.
• 🎈 Attach the shorter tubing to the outside of the bottle cap securely with tape.
• 🔋 Add weights to both sides of the bottle to serve as ballast for the submarine.
• 🌊 Test the submarine's design by placing it in a basin of water to observe its buoyancy and function.

Q & A

What materials are needed to create the simple submarine?

You will need a plastic bottle, a pin for making holes, a straw (cut into two parts), adhesive tape, and weights like batteries.

What is the first step in the submarine construction process?

The first step is to heat a pin and use it to create two holes in the plastic bottle cap.

Why should the holes in the bottle cap match the size of the straw?

The holes need to match the size of the straw to ensure a tight fit, allowing for effective water intake and expulsion.

How should the straw be prepared for the project?

The straw should be cut into two pieces: one shorter and one longer, which will be used for different functions in the submarine.

What is done with the plastic bottle after cutting it in half?

After cutting the bottle, the straw pieces are inserted into the cap, which is then secured to one half of the bottle.

How is the inside straw secured in place?

The inside straw is secured with adhesive tape to ensure it remains tightly fitted within the bottle.

What role do the weights (like batteries) play in the submarine model?

The weights are added to the bottom of the submarine to provide stability, helping it to sink and float correctly in water.

What principle does this submarine project demonstrate?

The project demonstrates Archimedes' principle, illustrating how buoyancy allows objects to float or sink in fluid.

How can the submarine be made to sink when placed in water?

The submarine sinks when water is allowed to enter through the shorter straw, increasing its weight and causing it to descend.

What is the method to make the submarine rise back to the surface?

To make the submarine rise, you can blow into the longer straw to expel the water, decreasing its weight and allowing it to float.