Question Video: Identifying a Spring Balance from a Set of Measurement Devices | Nagwa Question Video: Identifying a Spring Balance from a Set of Measurement Devices | Nagwa

Question Video: Identifying a Spring Balance from a Set of Measurement Devices Physics • First Year of Secondary School

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Which of the following tools shown is a spring balance? [A] Tool A [B] Tool B [C] Tool C

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Video Transcript

Which of the following tools shown is a spring balance?

A spring balance is a tool that is used to measure the weight of an object. The three tools that we see here can measure the mass or weight of an object. Tool (A) is a balance scale, which compares the mass of objects by balancing them out on either side of the scale. And it contains no springs in its construction, which means it certainly cannot be a spring balance. Tool (B) is a digital weight scale, so named because when you place an object on the scale to measure it, it gives a digital reading of mass or weight. And digital scales often do not include any springs in their construction, meaning that this cannot be a spring balance.

We see though that tool (C) certainly has a spring, and the method used to measure an object’s weight using this tool is to balance some object on the hook at the end. Tool (C), often called a spring scale, is also called a spring balance. Both of these terms refer to the same tool. So the answer to “which of the following tools shown is a spring balance?” is answer (C).

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