Uniform Circular Motion problem

In summary, the conversation is discussing the amount of horsepower needed for a motor to move a 150 lb person on a rolling chair in a circle with a radius of 7 ft at a speed of 1 m/s. The friction coefficient is 0.50 and the task is to determine how much work is being done to overcome friction over time.
  • #1
Unknown2x
5
0
there's a 150 lb person on a rolling chair and moves in a circle when a motor with a rope attached on it is hooked up to the chair.

If the radius of the circle is 7 ft, how much horsepower would the motor need to have to move the person at 1 m/s given that the friction coefficent is about 0.50.

Can someone give me an idea on how I can try to find how many horsepowers it would take? Thanks
 
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  • #2
You are required to find horsePOWER (*hint hint*). What do you know about power?
 
  • #3
oo power, i think that explains everything then. Just need to find how much work is being done to overcome friction over the time. thanks!
 

What is uniform circular motion?

Uniform circular motion is the motion of an object traveling along a circular path at a constant speed. This means that the object covers equal distances in equal intervals of time.

What are the key variables in a uniform circular motion problem?

The key variables in a uniform circular motion problem are the radius of the circle, the speed of the object, and the time it takes to complete one full revolution. Other variables may include the period (time for one revolution), the frequency (number of revolutions per unit time), and the centripetal force acting on the object.

How is centripetal force related to uniform circular motion?

Centripetal force is the force that keeps an object moving in a circular path. In uniform circular motion, the centripetal force is always directed towards the center of the circle and is equal to the product of the mass of the object, its speed squared, and the radius of the circle divided by the distance from the center to the object.

What is the difference between uniform circular motion and non-uniform circular motion?

In uniform circular motion, the speed of the object remains constant throughout the motion, while in non-uniform circular motion, the speed may vary. This means that the object is accelerating in non-uniform circular motion, as its velocity is changing.

How can we use the equations of motion to solve uniform circular motion problems?

The equations of motion can be used to solve uniform circular motion problems by substituting the values of the known variables into the equations and solving for the unknown variable. The key is to recognize which equation to use based on the given information and to properly convert units if necessary.

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