Potential energy is the stored up energy in an object. Potential energy usually has to do with objects on high elevations.

I stood at the seventh step on the stairs of the tiny house. I was holding the hammer 51 inches from the ground. The hammer weighed 21 ounces.

The formula for potential energy is PEg = mass x gravity x height.

We have to remember to convert the units to the metric system. There are 39 inches in one meter. There are 35 ounces in one kilogram.

Knowing the information above, we figured out that 51 inches is equal to 1.3077 meters and 35 ounces is equal to .9922 kilograms. Gravity is 9.8 meters/second squared.

If we plug everything into the formula, PEg = mass x gravity x height, the new formula is .9922 kg x 9.8 m/s^2 x 1.3077 m = 12.7155 Joules.

Energy is measured in Joules.

I stood at the seventh step on the stairs of the tiny house. I was holding the hammer 51 inches from the ground. The hammer weighed 21 ounces.

The formula for potential energy is PEg = mass x gravity x height.

We have to remember to convert the units to the metric system. There are 39 inches in one meter. There are 35 ounces in one kilogram.

Knowing the information above, we figured out that 51 inches is equal to 1.3077 meters and 35 ounces is equal to .9922 kilograms. Gravity is 9.8 meters/second squared.

If we plug everything into the formula, PEg = mass x gravity x height, the new formula is .9922 kg x 9.8 m/s^2 x 1.3077 m = 12.7155 Joules.

Energy is measured in Joules.

Kinetic energy is energy in motion.
From the seventh step of the stairs I dropped the hammer. (You can't see it but it's there!) When we calculated the potential energy (PE), we calculated the max potential energy. That means that 12.7155 was the total energy of the object and the kinetic energy (KE) was equal to zero. The max kinetic energy is how fast the object is going right when it hits the ground. |

When the KE is at it's max, the PE is at zero. This means that we can just plug in the max PE for KE in this formula, KE = 1/2 x mass x velocity squared, to find out how fast the object was going right before it hit the ground.

KE = 1/2 x mass x velocity^2

12.7155 J = 1/2 x .9922 kg x v^2

Multiply both sides by 2 to get rid of the 1/2.

12.7155 x 2 = 1/2 x .9922 kg x v^2 x 2

25.431 = .9922 kg x v^2

Divide both sides by .9922 to move all the numbers to one side.

25.431/.9922 = .9922 kg/.9922 x v^2

25.631 = v^2

Square root both sides to just get the value of the velocity.

5.063 meters/second = v

KE = 1/2 x mass x velocity^2

12.7155 J = 1/2 x .9922 kg x v^2

Multiply both sides by 2 to get rid of the 1/2.

12.7155 x 2 = 1/2 x .9922 kg x v^2 x 2

25.431 = .9922 kg x v^2

Divide both sides by .9922 to move all the numbers to one side.

25.431/.9922 = .9922 kg/.9922 x v^2

25.631 = v^2

Square root both sides to just get the value of the velocity.

5.063 meters/second = v

Load bearing walls are walls of a building/house that carry the weight of other things inside the structure. Without these walls, some components would not be able to be there. One of the obvious ones is the walls holding up the loft, as you can see to the right. Without these three walls the loft would not be able to lean on them. |

Work is applying force to an object to move it some distance.

I carried the same hammer as I did with the PE and KE. The hammer weighs .9922 kilograms. I carried the hammer a distance of 4 feet.

There are 3.281 feet in one meter. If we convert 4 feet into the metric system we get 1.219 meters.

The formula for work is Work = force x distance. To find the force applied to an object you use the formula Force = mass x acceleration.

We start off with finding the force.

Force = mass x acceleration

Our acceleration in this case is gravity.

Force = .9922 kg x 9.8 m/s^2

Force is measured in Newtons.

Force = 9.724 N

We take the force we just calculated and apply it to the work formula.

Work = force x distance

Work = 9.724 N x 1.219 m

Work is also measured in Joules.

Work = 11.854 J

There are 4.2 Joules in one calorie.

If my work was 11.854 J, I divide it by 4.2 to get how many calories I burned. I burned 2.822 calories carrying the hammer a distance of four feet.

If my work was 11.854 J, I divide it by 4.2 to get how many calories I burned. I burned 2.822 calories carrying the hammer a distance of four feet.

The recommended amount of calories to eat per day, for women, is 1,200 calories. When working out and maintaining weight the calorie count rises to 1,500 calories. Because we are building we are burning more calories so our total calorie count for the day should be 1,500. Assuming that you eat the same amount of calories per meal and have three meals per day, you would have to eat approximately 500 calories.

In order to get the calories I need to keep building I would eat the following for lunch:

a banana - 105 calories

a peanut butter and jelly sandwich - 189 calories

an apple - 95 calories

a granola bar - 132 calories

This would give me a total of 521 calories. The foods above are better for me to eat because the fruit has natural sugar, which will give me little bursts of energy. Processed sugar is way harder for your stomach to digest and it's definitely not as healthy. Food items with processed sugar include cookies, chips and soda. Because fruit has natural sugar it also acts as carbs that can be processed into energy for the next day of building. Peanut butter is high in protein and fiber. You need protein after a hard workout in order to give your body back the nutrients you just exerted. Granola helps with digestion and also helps to lower your cholesterol.

In order to get the calories I need to keep building I would eat the following for lunch:

a banana - 105 calories

a peanut butter and jelly sandwich - 189 calories

an apple - 95 calories

a granola bar - 132 calories

This would give me a total of 521 calories. The foods above are better for me to eat because the fruit has natural sugar, which will give me little bursts of energy. Processed sugar is way harder for your stomach to digest and it's definitely not as healthy. Food items with processed sugar include cookies, chips and soda. Because fruit has natural sugar it also acts as carbs that can be processed into energy for the next day of building. Peanut butter is high in protein and fiber. You need protein after a hard workout in order to give your body back the nutrients you just exerted. Granola helps with digestion and also helps to lower your cholesterol.

Power is the rate of doing work.

If I move the hammer as many times as I can in 20 minutes I calculate how much power I exert by using this formula: Power = work/time

The metric unit for time is seconds. We have to convert 20 minutes into seconds. if there are 60 seconds in 1 min we just multiply 20 x 60 to get how many seconds are in 20 minutes. This should get us 1,200 seconds.

Power = work/time

Power = 11.854 J/1,200 seconds

Power is measured in watts.

Power = .001 watts

If I move the hammer as many times as I can in 20 minutes I calculate how much power I exert by using this formula: Power = work/time

The metric unit for time is seconds. We have to convert 20 minutes into seconds. if there are 60 seconds in 1 min we just multiply 20 x 60 to get how many seconds are in 20 minutes. This should get us 1,200 seconds.

Power = work/time

Power = 11.854 J/1,200 seconds

Power is measured in watts.

Power = .001 watts

At Space4Art I worked a lot with the electrical screwdrivers. The drivers run on a battery. Batteries store electrical energy in the form of chemical energy. The chemical energy is stored in the battery. When we operate the screwdriver it turns the chemical energy stored in the battery to electrical energy to make the driver work.

A lot of buildings are built on site. They start off with a solid foundation and then start transferring loads onto the base. Modular construction is a little different. *Modular* or *module* means "a separable component, frequently one that is interchangeable with others, for assembly into units of differing size, complexity, or function." This basically means that we build the house off site in different components. This is what we did for the Tiny House Project.

Modular construction may seem a little dangerous at first. It might remind you of how every year they take apart and rebuild the roller coasters at your local fair. But modular construction is actually considered a safe building practice.

One of the biggest pros to modular constriction is that modular buildings are generally stronger than others. Because they are built in individual components they do not rely on the foundation for support. Also, each component is built to be transported to the location, making them even stronger. Building off site is also beneficial to the neighborhood because it doesn't create traffic, disruptive noise, and it's generally safer for the community around.

Modular construction may seem a little dangerous at first. It might remind you of how every year they take apart and rebuild the roller coasters at your local fair. But modular construction is actually considered a safe building practice.

One of the biggest pros to modular constriction is that modular buildings are generally stronger than others. Because they are built in individual components they do not rely on the foundation for support. Also, each component is built to be transported to the location, making them even stronger. Building off site is also beneficial to the neighborhood because it doesn't create traffic, disruptive noise, and it's generally safer for the community around.

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