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In Physics / High School | 2025-07-08

Describe the correct method for measuring the length of an object if the zero mark on your measuring scale is not visible. Provide an example.

Asked by mistyshaw8234

Answer (2)

When measuring the length of an object and the zero mark on your measuring scale is not visible, follow these steps to ensure accurate measurement:

Choose a Starting Point: Select a clear starting point on your measuring scale that is visible and in good condition. Let's assume that the 1 cm mark is visible and clear.

Align the Object: Place one end of the object at the chosen starting point, which is the 1 cm mark.

Mark the Endpoint: Identify the endpoint of the object on the measuring scale. For example, if the endpoint lies at the 8 cm mark, take note of this measurement.

Calculate the Length: Since you started measuring from the 1 cm mark instead of the zero mark, subtract the starting point (1 cm) from the endpoint (8 cm) to find the correct length of the object:
Length of the object = 8 cm − 1 cm = 7 cm


Example: Suppose you are measuring a pen and you know the zero mark is not visible. You place one end of the pen at the 1 cm mark and see that the other end aligns with the 8 cm mark. By subtracting the starting point from the endpoint (8 cm - 1 cm), you find the pen is 7 cm long.
This method ensures you get an accurate measurement even if the zero mark is not visible on your measuring tool.

Answered by IsabellaRoseDavis | 2025-07-21

If the zero mark on your measuring scale is not visible, you can still measure length by using a visible mark as a starting point and then calculating the difference between the endpoint and starting point. For instance, if you measure from the 1 cm mark to the 8 cm mark, the length is 7 cm. This step-by-step approach ensures accurate measurements regardless of the zero mark's visibility.
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Answered by IsabellaRoseDavis | 2025-08-12