Circular Motion and Gravitation
What is the equation for centripetal acceleration?
If students were to investigate how varying masses affect the tension force in uniform circular motion, which method ensures that only mass is being altered without affecting other variables like speed or radius?
Changing weights on an atwood machine where one side moves in circular motion within a horizontal plane.
Placing objects of different masses on records spinning at unknown speeds on turntables with identical diameters.
Using objects of different masses attached to strings of equal length swung at a constant period.
Dropping objects of different masses from varying heights onto a rotating platform.
What type of acceleration is experienced by an object moving at a constant speed in a circular path?
Centripetal acceleration
Uniform acceleration
Tangential acceleration
Linear acceleration
Centripetal acceleration is best represented by
What quantity must change for an object undergoing uniform circular motion?
Speed
Mass
Temperature
Direction of velocity
Which factor does NOT directly affect the magnitude of centripetal force experienced by an object undergoing uniform circular motion?
Mass of the object in motion
Mass of the object nearest to it
Speed of the object
Radius of the circular path
If you're moving on a merry go round and you're standing near the outside compared to a rabbit that's closer to the center, who will be going faster?
both the rabbit and the person will accelerate but then slow down
neither, they move at the same speed
the rabbit
the person

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What happens to the centripetal acceleration of an object in uniform circular motion if its velocity doubles?
The centripetal acceleration doubles.
The centripetal acceleration remains unchanged.
The centripetal acceleration quadruples.
The centripetal acceleration halves.
What type of force provides the centripetal force necessary for an object to move in a circular path?
Electrostatic force
Magnetic force
Frictional force
Gravitational force
If a car is traveling in a circle at a constant speed and the frictional force is the only force providing centripetal acceleration, what would happen if the coefficient of friction between the tires and road suddenly decreased?
The car would increase its speed along the circular path due to a decrease in opposing frictional forces.
The car would start to slide outward because there is less frictional force available to provide the necessary centripetal acceleration.
The car would continue on its circular path with unchanged conditions as inertia alone maintains its motion.
The car's radius of curvature would decrease, leading to an increase in centripetal acceleration.