What is the mass of the ruler moments? (Answer: 127.04g)

In summary, the mass of ruler moments is a measurement that considers the distribution of mass along a ruler or object. It is calculated by multiplying the mass of each object by its distance from a reference point and adding these values together. This measurement is significant in understanding the behavior of an object and is used in engineering and physics applications. It can be negative if the objects are placed on opposite sides of the reference point, and can be changed by altering the mass or position of the objects on the ruler.
  • #1
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Homework Statement
Trying to answer the question shown in the picture below. I have to deduce the mass of the ruler.
Relevant Equations
Assuming it’s a moments problem
The answer is 127.04g. I’m getting close but can’t get the answer.

Using 9.81 for gravity, the force where the balance is is 2.10(58146)N

As it is balanced

2.10N x 0.29m = W x 0.50m where 0.50 is the centre of mass

That gives W = 1.22N

= 124.5g?

79E3FA4E-774C-4D13-AAF5-FF5342CAF14D.jpeg
 
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  • #2
Is 0.50 m correct for the centre of mass?
 
  • #3
Did you notice the metre ruler was pivoted at the 1.0 cm mark?
 
  • #4
49cm, thank you!
 

FAQ: What is the mass of the ruler moments? (Answer: 127.04g)

What is the mass of the ruler moments?

The mass of the ruler moments is 127.04g.

Why is the mass of the ruler moments important?

The mass of the ruler moments is important because it is a crucial factor in determining the overall weight and balance of the ruler. It also affects the accuracy of measurements made with the ruler.

How is the mass of the ruler moments measured?

The mass of the ruler moments can be measured using a scale or balance specifically designed for measuring small objects like rulers. The ruler is placed on the scale and the reading is taken to determine the mass.

Does the material of the ruler affect its mass?

Yes, the material of the ruler can affect its mass. For example, a wooden ruler will have a different mass than a plastic ruler, even if they are the same size. This is because different materials have different densities.

Can the mass of the ruler moments change?

Yes, the mass of the ruler moments can change if the ruler is altered in any way, such as being cut or having material added or removed. It can also change if the ruler is exposed to extreme temperatures, which can cause it to expand or contract.

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