AP Physics 1 Uniform Circular Motion and Gravitation — practice questions
51 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP Physics 1 Uniform Circular Motion and Gravitation in the app →As an object moves along a circular arc, its rotation angle is defined as which ratio?One complete revolution around a circle corresponds to a rotation angle of how many radians?Angular velocity is defined as the rate of change of which quantity?For a point at radius r on a spinning object with angular velocity omega, what is the relationship between itsCalculate the angular velocity of a 0.300 m radius car tire when the car travels at 15.0 m/s.An earth mover has tires of radius 1.20 m, four times the radius of a 0.300 m car tire. If both vehicles traveBoth linear velocity and angular velocity are vector-like quantities with a direction. Which statement correctA microwave oven turntable rotates at about 6 revolutions per minute. Using the fact that one revolution is 2 An object travels in uniform circular motion, so its speed never changes. Why does it still have an acceleratiIn uniform circular motion, the centripetal acceleration of an object points in which direction?The magnitude of centripetal acceleration for an object moving at speed v on a circle of radius r can be writtWhat is the magnitude of the centripetal acceleration of a car following a curve of radius 500 m at a speed ofFor the car in the previous curve, taking g = 9.80 m/s^2, how does the 1.25 m/s^2 centripetal acceleration comCalculate the centripetal acceleration of a point 7.50 cm from the axis of an ultracentrifuge whose angular veWhat must always be present to cause a centripetal acceleration, according to Newton's second law of motion?A centrifuge is described as a device that separates specimens of different densities. What property of the spA tetherball tension, Earth's gravity pulling on the Moon, and friction between roller skates and a rink floorA physics student says centripetal force is a distinct new force, separate from gravity, tension, friction, anThe centripetal force on a mass m moving on a circle of radius r can be written as which pair of equivalent exIf the mass and speed of an object are held fixed, what happens to the radius of its circular path as the centCalculate the centripetal force exerted on a 900 kg car that negotiates a 500 m radius curve at 25.0 m/s.On the same unbanked 500 m curve at 25.0 m/s, static friction alone supplies the centripetal force on the 900 On an ideally banked, frictionless curve, the banking angle theta needed for speed v and radius r satisfies whTo illustrate, calculate the speed at which a 100 m radius curve banked at 65.0 degrees should be driven if thFor an ideally banked curve with no friction, how does the ideal banking angle theta depend on the mass of theA satellite moves in a circular orbit at constant speed, with Earth's gravity supplying the centripetal force A physicist analyzing a car making a tight turn says there is no real force pushing the passenger sideways relA rider on a rapidly spinning merry-go-round feels pushed outward and must hold on tightly. What name is givenA ball is slid directly outward from the center of a rotating merry-go-round with negligible friction. Viewed Viewed from above the North Pole, Earth rotates counterclockwise. In which hemisphere does the Coriolis force Air flows inward toward the low-pressure center of a tropical cyclone in the northern hemisphere. The CoriolisWhat is a fictitious force, as distinguished from a real force like tension or friction?A centrifuge spins a test tube rapidly to sediment particles faster. In the rotating frame, this is described Between explaining a curved path using a fictitious force in a rotating frame and explaining the same path usiAccording to Newton's universal law of gravitation, how does the gravitational force between two particles depIn SI units, what is the measured value of the universal gravitational constant G in Newton's law of gravitatiSubstituting the weight mg for the gravitational force F = GmM/r^2 and solving for g shows that g = GM/r^2. WhUsing G, Earth's mass, and Earth's radius, what value does Newton's law of gravitation predict for the accelerFind the acceleration due to Earth's gravity at the distance of the Moon's orbit, 3.84 x 10^8 m from Earth's cNewton compared the acceleration due to Earth's gravity at the Moon's distance, about 2.70 x 10^-3 m/s^2, withThe largest ocean tides, called spring tides, and the smallest, called neap tides, depend on the alignment of An astronaut orbiting Earth for months experiences what is commonly called weightlessness. What does this termHenry Cavendish's torsion balance experiment measured the tiny gravitational attraction between ordinary laborKepler's first law describes the shape of a planet's orbit around the Sun. What shape does it state, and whereKepler's second law describes how fast a planet moves at different points in its orbit. What does the law statKepler's third law, T1^2/T2^2 = r1^3/r2^3, compares the periods and orbital radii of two satellites. Under whaKepler's laws, as presented, describe orbits satisfying two conditions. What are they?Given that the Moon orbits Earth every 27.3 days at an average distance of 3.84 x 10^8 m, use Kepler's third lRearranging Kepler's third law as r^3/T^2 = GM/(4 pi^2) shows that this ratio should be the same for every satUnder the definition of a planet set by the International Astronomical Union in 2006, a body that orbits the SThe Ptolemaic model placed Earth at the center of the universe and used complex superpositions of circles to d