Uniform Circular Motion
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It can be described as the motion of an object in a circle at a constant speed.
Uniform Circular Motion
As an object moves in a ______, it is constantly changing its _________.
Circle / Direction
The direction of the velocity vector is the same as the direction of the object’s motion, that is, it is at every instant is in a direction _______ to the circle.
Tangent
We call the acceleration of an object moving in uniform circular motion the
centripetal acceleration (ac).
what is the formula of centripetal acceleration ?
v(2) / r
A 900-kg car moving at 10 m/s takes a turn around a circle with a radius of 25.0 m. Determine the acceleration of the car.
4 m/s(2)
Find the centripetal acceleration of an object with a mass of 10 kg moving at 20 m/s with a radius of 30 m
13.33m/s(2)
it is responsible for the centripetal acceleration that is directed towards the center of the circle
Centripetal Force
If the centripetal force is removed, the object will not continue moving in a circular path. Rather, it will move ______ to the circular path at the point where the force was cut or removed.
Tangent
what is the formula o centripetal force?
f(c) =ma(c)
what is the other formula of acceleration?
a(c) = f(c) / m
A rock tied to a string is moving in a uniform circular motion due to the exerted centripetal force of 10 N causing a centripetal acceleration of 10.5 m/s2. What is the mass of the rock?
0.95 KG
is the motion of an object in a circle or arc with a constant speed.
Uniform Circular Motiom
“Centripetal” means
center-seeking
The direction of a centripetal force and centripetal acceleration is in
the center of rotation