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How do you find the center of mass of a seesaw?
Calculating Center Of Mass There’s a simple way to figure out where the center of mass is. If the big kid is two times as heavy as the little kid, then their mutual center of mass will be two times closer to the big kid than to the little kid. Three times heavier and the center of mass will be three times closer.
What is a seesaw in physics?
A seesaw is a specific type of lever; it consists of a long beam attached to a pivot called the fulcrum. As soon as you put weight on one end by sitting on one side of the beam it drops to the ground. This is because the force of gravity is acting on the weight of your body, pulling it and the beam down.
What is the rule of balance physics?
The rule for something to be balanced is called the principle of moments and is written as follows: The principle of moments. When an object is balanced (in equilibrium) the sum of the clockwise moments is equal to the sum of the anticlockwise moments.
Is a seesaw a torque?
Torque is defined as force times distance, where the force acts perpendicular to the distance about a point of rotation. The net torque on the seesaw could be zero, but the seesaw could rotate with a contant angular speed.
What is the equation for center of mass?
The center of mass can be calculated by taking the masses you are trying to find the center of mass between and multiplying them by their positions. Then, you add these together and divide that by the sum of all the individual masses.
What is the physics equation for a seesaw?
So: No energy, force (save for m*g), or linear momentum needed. Instead: Torque and angular momentum. I0, the moment of inertia of the see-saw (it plays the same role as mass). g, the acceleration of a free body due to gravity. m [i], the mass of the ith particle sitting on the seesaw. x [i], the position of the ith particle sitting on the seesaw.
How is a scalar applied to a seesaw?
Imagine applying a scalar down the seesaw based on how far it is from the pivot. From the Pivot: Apply the same to the opposite side. When someone lands, take the product of the scalar tied to where he landed with the scalar for where the other guy is standing. Then transfer that much energy to him.
Why is there no conservation of energy in a seesaw?
You don’t really have much conservation of energy here, because the collisions with the see-saw are inelastic and do not conserve energy. You don’t have much F=ma here, because if you used some force like that you’d still have to deal with angular things.
How to calculate the angular momentum of a seesaw?
Then the angular momentum of the seesaw alone is I2*qdt2, where qdt2 is the angular velocity of the seesaw without mass 0 on it. Using the definition of angular momentum with the vector cross product r x v, we can argue that the angular momentum of mass 0 about the center of the seesaw is x [0]*m [0]*v*sin (a).