What is a Balance Beam Scale?
A balance beam scale measures the force exerted by the weight of a person against gravity. A balance beam scale consists of two parts: one part is made up of three horizontal bars (or blocks) and another part is made up of four vertical bars (or blocks). These are called “balance” because they provide stability when weighing objects.
The bar that rests on top of the block is called the “top bar.” The bottom bar is called the “bottom bar.” The bars are connected with screws at their ends so that they can move freely around each other. When you place a weight on top of these bars, it will cause them to move slightly in relation to each other.
If all four bars are balanced perfectly, then there will be no movement whatsoever. You would have zero resistance as your body was weighed against gravity.
The most common type of balance beam scale is known as a “reloadable” balance beam scale. This means that the top bar can be adjusted to change how much weight you put on it. For example, if you want to weigh less than 100 pounds, you could adjust the top bar so that it weighs between 90 and 99 pounds; if you want to weigh more than 100 pounds, then adjust the top bar so that it weighs between 110 and 119 pounds.
How Do You Use a Beam Scale?
Place the scale on a hard, flat surface. Make sure that there are no objects that may cause interference.
Stand on the platform barefoot with your feet together and your arms at your sides. No part of the body should overhang the scale platform.
Use foot imprints or set your feet on the edges of the scale. Avoid using toeholds or setting your feet at the front or back of the platform.
Do not wear shoes or any other object on your feet.
Beam scales are used to weigh heavy and light objects. It can also be used to measure density and percent weight increase. For example, you can use it to weigh a set of dumbbells before and after using them, and then calculate the weight by subtracting the original weight from the increased weight.
The accuracy of a beam scale depends on numerous factors.
Sources & references used in this article:
Potential use of strain hardening ECC in permanent formwork with small scale flexural beams by H Li, CKY Leung, S Xu, Q Cao – … of Wuhan University of Technology-Mater …, 2009 – Springer
Small-scale fracture toughness of ceramic thin films: the effects of specimen geometry, ion beam notching and high temperature on chromium nitride toughness … by JP Best, J Zechner, JM Wheeler… – Philosophical …, 2016 – Taylor & Francis
Nanometre-scale displacement sensing using a single electron transistor by RG Knobel, AN Cleland – Nature, 2003 – nature.com
A picogram-and nanometre-scale photonic-crystal optomechanical cavity by M Eichenfield, R Camacho, J Chan, KJ Vahala… – nature, 2009 – nature.com