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Hardikph
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Member advised to use the homework template for posts in the homework sections of PF.
How is Δθ in circle equals to angle in velocity vectors triangle?
I tried using simple geometry but I can't.
That is not Vb in the figure on the right, that is -Vb(my mistake), so that dV = Va + (-Vb) ( vectors )Clara Chung said:photo : http://s613.photobucket.com/user/Yan_Wa_Chung/media/Untitled_zpsqfu6lfi8.png.html
you have to consider angle a and b in the figure on the left. And with some 90 degree usage:)
Hardikph said:Delta2 and Clara I appreciate your explanation but can you please describe some '90 degree usage'.
Hardikph said:
Uniform circular motion is a type of motion in which an object moves in a circular path at a constant speed. This means that the object covers the same distance in the same amount of time, resulting in a constant velocity.
An object undergoes uniform circular motion when it is acted upon by a centripetal force, which is directed towards the center of the circular path. This force is necessary to continuously change the direction of the object's velocity, keeping it in circular motion.
In uniform circular motion, the speed of the object remains constant, while in non-uniform circular motion, the speed changes throughout the circular path. This means that the object's velocity is also changing in non-uniform circular motion, while it remains constant in uniform circular motion.
No, an object cannot undergo uniform circular motion without a force acting on it. As mentioned earlier, a centripetal force is necessary to continuously change the direction of the object's velocity and keep it in circular motion. Without this force, the object would move in a straight line.
Some examples of uniform circular motion include the motion of a satellite in orbit around a planet, the motion of a car around a roundabout, and the motion of a spinning top. Any object that moves in a circular path at a constant speed can be considered an example of uniform circular motion.