All Flashcards
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.
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.
How do you calculate the magnitude of centripetal acceleration?
Use the formula: , where v is tangential speed and r is the radius.
How do you find the minimum speed required to stay on the track at the top of a vertical loop?
Use the formula: , where g is the acceleration due to gravity and r is the radius of the loop.
How do you calculate the period (T) using speed and radius?
Use the formula: , where r is the radius and v is the speed.
How do you calculate the net acceleration in circular motion?
Find the vector sum of centripetal and tangential accelerations. Remember they are perpendicular.
How do you calculate the relationship between period and frequency?
Use the formula: