Circular Motion Flashcards
What is the relationship between the period and frequency
Reciprocal steps of each other
When a car foes around curve at hug speed a person in the passenger seat feels pushed into the door of the car what forces on the passenger in the car and what are all the forces acting on the person, and what is the centripetal force
Gravity normal force as the centripetal force towards center of the circle while there is another normal force upward to keep the person on the seat
How is gravity a centripetal force
The moon rotation around the earth , or when going up on a hill the person feels weightless there is only gravity no normal force
When is normal force a centripetal force
The car door pushing on a person
When is tension centripetal force
Spinning something on end of string
When is friction a centripetal force
Car going around a curve
Acceleration and net force are at what direction
Center of circle
What is the purpose of a banked curve
If in a racetrack race cars go really quickly banked curves allow the normal force and friction work together to help car make the turn around the curve without going straight or letting friction do the work like a unbanked curve, allows car to make a curve at high speeds without sliding
A small mass hanging by a string is swung In a vertical circle in what direction is acceleration, in what direction is the net force, what provides the centripetal force, where is the tension in the string the greatest and the least
Center of circle because it is centripetal that is continually changing, net force is same as acceleration towards center , the gravity and tension in varying proportions because it’s pulling to center of circle, the tension is greatest at bottom because there is more tension at the bottom since there is also gravity that the tension has to counteract to push the mass up to center of circle, tension less at top because it has gravity and tension and tension smaller than gravity so can’t counteract it
A small, mass hanging by a string is swung in a horizontal circle what force is the centripetal force and what keeps the mass from falling vertically due to its own weight
Tension is pulling towards the center of the circle while tension on an angle keeps it from falling down because object is never truly horizontally placed
Discuss the two ways of recording time for objects undergoing circular motion includes units
Period which is the time for one revolution shows as T and the unit is seconds, and frequency is the amount of revolutions in a specific time shows with f and units is Hz hertz
