Cara mudah, cepat, dan akurat mengukur volume benda berbentuk tidak beraturan

Summary

This video demonstrates a quicker, easier, and more accurate method to measure the volume of irregularly shaped objects. Using a kitchen scale, water, and a hanger fixture, the technique leverages water displacement principles to determine volume without the need for measuring glasses. The video explains the process step-by-step, from weighing submerged objects to calculating their volume based on water displacement. It also clarifies the concept of mass versus weight and highlights the precision of this approach, even for objects with complex shapes. Viewers are encouraged to practice this method and calculate densities for additional pieces.

Takeaways

• 😀 Irregular shaped objects can be difficult to measure for volume using traditional methods.
• 😀 Regular shapes, like cubes, are easy to measure by multiplying length, width, and height.
• 😀 A common method for measuring the volume of irregular shapes involves using a measuring glass filled with water, but this method is not always precise or easy.
• 😀 The suggested method for measuring volume more easily and accurately is by using a kitchen scale.
• 😀 For more accurate results, a laboratory scale is preferable, but a kitchen scale is sufficient with a 1-2 gram tolerance.
• 😀 The process involves suspending the object in water using a hanger fixture and measuring the weight change on the scale.
• 😀 The scale reads the change in mass, which can be converted to volume using the known density of water (1 gram per cubic centimeter).
• 😀 When the object is suspended in water and not touching the bowl floor or water surface, the weight on the scale corresponds to the volume of water displaced.
• 😀 For example, a piece with a mass reading of 130 grams corresponds to a volume of 130 cubic centimeters (or milliliters).
• 😀 The method can be applied to both sinking and floating objects, with some adjustments needed for objects that float.
• 😀 The script also demonstrates how to calculate density using the measured volume and the given mass, encouraging viewers to practice with the example pieces.

Q & A

Why is measuring the volume of irregular shapes difficult?

Measuring the volume of irregular shapes is challenging because their forms do not fit common geometric shapes like cubes, cylinders, or spheres, making standard volume calculation methods unsuitable.

What is the most common method for measuring the volume of irregularly shaped objects?

The most common method is to use a measuring glass, fill it with water, and then submerge the object in the water. The rise in water level indicates the object's volume.

How does using a weighing scale improve the measurement process?

Using a weighing scale makes the measurement process easier, faster, and more accurate. By measuring the displacement of water, it allows for precise volume calculation without the need for a measuring glass.

What kind of scale is recommended for this method?

A kitchen scale can be used for this method, though it may have a tolerance of 1-2 grams. A laboratory scale would give more precise results.

What additional equipment is required besides the weighing scale?

You will need a bowl of water (any amount that can submerge the object), and a hanger fixture that can suspend the object in the water without touching the bowl's bottom or the water surface.

How do you calculate the volume of an object using a scale and water?

By measuring the mass of the displaced water when the object is suspended in it, you can calculate the object's volume. Since water has a density of 1 gram per cubic centimeter, the volume of the displaced water in grams is equal to the object's volume in cubic centimeters (or milliliters).

What does the 'flying' object in water refer to in the script?

The 'flying' object refers to an object suspended in water, neither floating on the surface nor sinking. It's held up in the water by a string or hanger, allowing for measurement of displaced water.

How is the mass shown on the scale related to the water's volume?

The mass shown on the scale corresponds to the amount of displaced water, which is equal to the object's volume. Since the density of water is 1 gram per cubic centimeter, the mass in grams is directly equal to the volume in cubic centimeters (or milliliters).

What method is used to measure the volume of an object with lower density than water?

For objects with lower density than water, which float, the object is forced to sink by attaching a small stick or rod. This ensures the object displaces enough water for volume measurement.

How can this method be applied to measure the volume of both simple and irregular objects?

This method works for both regular and irregular shapes by calculating the volume based on the displacement of water. For regular shapes, the measurement is straightforward, while for irregular shapes, the object is suspended in the water to measure its displaced volume.