Question

10. A 2.3kg solid cylinder, with a radius of 15cm, is pulled horizontally by a string with a force of 20N, as shown in the figure above. What is the net torque on the wheel? (a) 1.5 Nm (b) 3 Nm (c) 20 Nm (d) 133 Nm

11. A 2.3kg solid cylinder, with a radius of 15cm, is pulled horizontally by a string with a force of 20N, as shown in the figure above. What is the angular acceleration of the cylinder? (a) 5.8 rad/s2 (b) 17.39 rad/s2 (c) 38.6 rad/s2 (d) 115.8 rad/s2

12. A distant planet, X, has a mass double that of Earth and a radius triple that of Earth. What would the gravitational acceleration of planet X be at its surface? Assume g = 9.81 m/s2 , and use Google to look up any constants you feel you might need to solve this problem. (a) 2.18 m/s2 (b) 4.37 m/s2 (c) 6.54 m/s2 (d)

13.1 m/s2 13. A satellite is placed in orbit around the Earth such that it has a period of 90 minutes. What is the altitude of the satellite’s orbit? Use Google to look up any constants you feel you might need to solve this problem. (a) 282 km (b) 405 km (c) 2,547 km (d) 6,653 km

Answer 1