All Flashcards
What is the effect of centripetal force?
It causes centripetal acceleration, which changes the direction of an object's velocity, keeping it in circular motion.
What happens if the string is cut in a conical pendulum?
The block moves in a straight line tangent to the circle at a constant speed.
What happens to the block's motion if the turntable is not frictionless after the string is cut?
Friction will act opposite to the direction of motion, the block will slow down and spiral outwards.
A block of mass m is placed on a frictionless horizontal turntable at a distance r from the center. The turntable is rotating with a constant angular speed ω. The block is held in place by a string attached to the center of the turntable. Draw and label all the forces acting on the block before the string is cut.
N (Normal Force) pointing upward, mg (Gravitational Force) pointing downward, T (Tension) pointing toward the center.
What is centripetal acceleration?
Acceleration that keeps an object moving in a circle, directed towards the center.
Define tangential acceleration.
The rate of change of an object's speed, acting tangent to the circular path.
What is the period (T) in circular motion?
The time it takes for one complete revolution or cycle, measured in seconds.
What is frequency (f) in circular motion?
The number of revolutions per second, measured in Hertz (Hz).
Define uniform circular motion.
Motion of an object moving at a constant speed in a circle.