# Suspended Painting: Finding Its Weight

• ignacioserra
In summary, a painting is hanging from two silk ropes at a 120º angle with each rope exerting a force of 400 N. The combined force of the ropes can be found using trigonometry, but the weight of the painting requires resolving the forces into horizontal and vertical components. Another approach would be to compare the resultant of the forces to the weight of the painting.
ignacioserra

## Homework Statement

A painting hangs from two identical silk ropes that form an angle of 120º. Both ropes make forces of 400 N each to keep it in place.

## Homework Equations

a. Find the combined force of both silk ropes.(I have already done it)
b. How heavy is the painting?(need help in this one)

## The Attempt at a Solution

I don't know what the Formula I have to use, to resolve the second one.

Last edited:
Welcome to PF.

I think you will want to draw a picture yourself and resolve the forces on the ropes into x,y components.

Since everything is in equilibrium then the horizontal forces will cancel and be equal. The vertical force components then must support the weight.

is the resultant of both forces equal to the weight?

ignacioserra said:
is the resultant of both forces equal to the weight?

That would be another way to do it.

## What is "Suspended Painting: Finding Its Weight"?

"Suspended Painting: Finding Its Weight" is a scientific experiment that involves suspending a painting and determining its weight using various methods and equipment.

## Why is this experiment important?

This experiment is important because it allows scientists and art historians to better understand the materials and techniques used by artists in creating their paintings. It also helps in the preservation and restoration of artworks.

## How is the weight of a painting determined?

The weight of a painting can be determined using a variety of methods, such as weighing the painting on a scale, calculating its volume and density, or measuring the force required to suspend it.

## What are some of the challenges in conducting this experiment?

One of the main challenges in conducting this experiment is ensuring the accuracy of the measurements and reducing any potential damage to the painting. Another challenge is obtaining the necessary equipment and expertise to conduct the experiment.

## What can be learned from the results of this experiment?

The results of this experiment can provide insights into the materials and techniques used by artists in creating their paintings. It can also help in identifying any changes or damage to the painting over time, which can aid in its preservation and restoration.

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