Calculating rotational g force

• 1953greg
In summary, rotational g force is the force exerted on an object as it moves in a circular path, directed away from the center of rotation. It is calculated using the formula g-force = (radius of rotation * angular velocity^2) / gravitational constant and is measured in g, or 9.8 m/s^2. The main factors affecting rotational g force are the radius of rotation and angular velocity, and it differs from linear g force as it is caused by circular motion rather than linear motion.
1953greg
i observed a wind turbine w/ 253' diameter rotor (according to website http://www.hcpd.com/powerresources/wessingtonspringswindfarm/ ) and timed rotation was 3.3 seconds. if my calculations are correct the tip speed was a whopping 229 mph!

is this enough info to calculate g forces at the tip?

any insight appreciated 1953greg

The acceleration is omega squared times the radius, where omega is the angular velocity.
OR you can use velocity squared divided by radius.
Be careful to keep your units right - use SI units and you are less likely to go wrong.

Yes, this information is sufficient to calculate the g forces at the tip of the wind turbine. The formula for calculating rotational g force is given by g = (v^2)/r, where g is the g force, v is the tangential velocity (tip speed in this case), and r is the radius of rotation (half the diameter of the rotor). Using this formula, we can calculate the g force at the tip of the wind turbine as follows:

g = (229 mph)^2 / (253 ft/2) = 2,910 g

This means that the tip of the wind turbine experiences a force 2,910 times the force of gravity due to its high rotational speed. This is a significant amount of force and indicates the strength and durability of the wind turbine's design. However, it is important to note that this calculation assumes a uniform rotation and does not take into account other factors such as wind resistance, blade design, and weight distribution. Therefore, the actual g forces experienced by the wind turbine may vary.

1. What is rotational g force?

Rotational g force, also known as centrifugal force, is the force exerted on an object as it moves in a circular path. This force is directed away from the center of rotation and is proportional to the mass and speed of the object.

2. How is rotational g force calculated?

The formula for calculating rotational g force is: g-force = (radius of rotation * angular velocity^2) / gravitational constant. This formula can be used to determine the amount of g force experienced by an object in circular motion.

3. What is the unit of measurement for rotational g force?

The unit of measurement for rotational g force is g, which represents the acceleration due to gravity. 1 g is equal to 9.8 meters per second squared (m/s^2).

4. What factors affect rotational g force?

The two main factors that affect rotational g force are the radius of rotation and the angular velocity of the object. A larger radius or faster angular velocity will result in a higher g force.

5. How is rotational g force different from linear g force?

Rotational g force is different from linear g force in that it is caused by circular motion rather than linear motion. In linear g force, the force is directed along the same axis as the motion, while in rotational g force, the force is directed away from the center of rotation.

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