Trig Paper

In: Business and Management

Submitted By carter1
Words 897
Pages 4
How much weight did I just lift? You might ask yourself after a good set of pushups. Was it 90% of my body weight? No, maybe it was 50%? I will calculate the percentage of your body weight that you would expect to "push up" during both regular and inclined pushups. Before I begin with the math, lets define what a pushup is. More specifically, lets discuss proper form and technique. First, get onto the ground. Elevate your body using your arms and keep you back straight as a board. Don't let your gluteus maximus stick into the air or hang low. There should be a 90 degree angle between your arms and the floor. Your hands should be placed about one and a half times your shoulder width apart and pointed parallel to your body. Your body should be raised on the balls of your feet. Your feet should also be touching or no more than shoulder width apart. When you go downward, only bend your elbows. You can come back up once the elbows break the plane of your back. I will calculate the percentage of body weight resisted during a pushup for an average sized person. Since the resulting number will be a percentage, it will be correct for any person who has the same dimensions or ratio of dimensions as the average person calculated here.

The characteristics of an average 25 year old American male are:

Height: 70 inches (1.778 m) Palm to Shoulder length: 23 inches (0.5842 m) Shoulder to Hip Length: 24.75 inches (0.62865 m) Hip to Ankle Length: 31.5 inches (0.800 m)

For Inclined Pushups, the following objects will be used for the calculations:

Standard Chair Height: 18 inches (0.457 m) Standard Counter Top Height: 32 inches (0.813 m)

I will calculate the resultant forces in hand of a human using the principles of engineering statics, Newton's Second Law of Motion, and the assumptions stated above.. The metric system will also be…...

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Trig

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Trig

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