Path followed by an object released during circular motion. The above diagram shows an object on a string as the object is moved in a vertical circle at a constant speed. At which point on the circle is the tension in the string the greatest? The above diagram shows a disk which is spinning counter clockwise at a constant O The tension in the string will be the same at all points. speed. A wad of gum is stuck to the surface of the disk at point A. As point A passes through the position shown in the diagram, the gum comes loose. Which of OR the vector arrows best indicates the direction of travel of the wad of gum immediately after it comes loose? OQ OS OP OP OR Jupiter has a mean radius of orbit of 7.78 x 1011 m. If the period of 10. The moon Ariel orbits Uranus with an average radius of 1.91 x 108 m Jupiter's orbit is 4.33 x 103 days, what is its mean tangential speed? OQ once every 2.18 x 105 s. If Uranus's moon Titania orbits with a radius of 4.36 x 108 m, what would you expect its period to be? 3.14 x 105 m/S 3.78 x 105 s A bicycle is travelling at a speed of 5.00 m/s. If the radius of the wheel is O1.31 x 104 m/s 32.0 cm, then its frequency of rotation must be Hz. 04.98 x 105 s (Record your three-digit answer 01.13 x 109 m/s 3.92 x 105 s Your answer: OOO 4.53 x 102 m/s 07.52 x 105 6. A 5.00 kg mass is riding on a horizontal platform that is rotating with a 7. A 3.75 kg bucket pile of water is swung in a vertical circle. If the speed of period of 8.00 s. The mass is held in place by the friction at a distance of the bucket at the top of the loop is 6.20 m/s, then the radius of the 5.20 m from the centre of rotation. The coefficient of friction between the largest circle through which this pail could move without the water mass and the platform must be at least . (Record your two- leaving the bottom of the pail would be m. (Record your digit answer.) three-digit answer.) Your answer: OOOO Your answer: 5. A centripetal force of magnitude F acts on a mass. What would be the magnitude of the centripetal force if both the radius and the period of the circular motion were tripled? OF O 3F OF/3 O 27F 9. A planet orbits a star of which Kepler's constant is 6.03 x 10-12 s2/m3. If the period of this planet's motion is 5.75 x 105 s, then its mean radius of orbit is a.bc x 10 m. The values of a, b, c, and d are (Record your 4 digits answer). Your answer: DOO