A
Andrew
Guest
39. The mass of Earth is about 80 times that of the moon and its radius is about 3.7 times that of the moon. Calculate the acceleration due to gravity at the surface of the moon. Express your answer in g’s. -
40. If you drop a 1-kg mass just above Earth’s surface, it accelerates downward at 9.8 m/s2. But the force that pulls the 1-kg mass downward is also the force that pulls the 6 x 1024-kg Earth upward. Calculate the acceleration of Earth as it “races upward” to meet the 1-kg mass. -
41. The mass of Saturn is 95 times that of Earth and its radius is 9 times that of Earth. Calculate the acceleration due to gravity at the surface of Mars? The mass of Mars is 0.11 that of Earth, and its radius 0.53 that of Earth. -
42. What would be the weight of a 1-kg mass on the surface of Mars? The mass of Mars is 0.11 that of Earth. -
43. Many people mistakenly believe that the astronauts that orbit Earth are “above gravity.” Calculate g for space shuttle territory, 200 km above Earth’s surface. Assume Earth’s mass is 6.0 x 1024 kg, and its radius is 6.38 x 106 m (6380 km). Your answer is what percentage of 938 m/s2? -
44. On the small and good planet Ballonius in distant solar system, suppose we find the radius of the good planet to be 200 000 m. We also drop a rock and find that it travels 1.5 m in the first second of free fall, which means it accelerates at 3 m/s2. Estimate the mass of Ballonius. -
45. Choose any of the planets and calculate its tidal force on you. Compare your answer with your answer to plug and chug exercise 24. Then communicate your result to any of your friends who say the planets exert tidal forces on people and in so doing influence their lives! -
40. If you drop a 1-kg mass just above Earth’s surface, it accelerates downward at 9.8 m/s2. But the force that pulls the 1-kg mass downward is also the force that pulls the 6 x 1024-kg Earth upward. Calculate the acceleration of Earth as it “races upward” to meet the 1-kg mass. -
41. The mass of Saturn is 95 times that of Earth and its radius is 9 times that of Earth. Calculate the acceleration due to gravity at the surface of Mars? The mass of Mars is 0.11 that of Earth, and its radius 0.53 that of Earth. -
42. What would be the weight of a 1-kg mass on the surface of Mars? The mass of Mars is 0.11 that of Earth. -
43. Many people mistakenly believe that the astronauts that orbit Earth are “above gravity.” Calculate g for space shuttle territory, 200 km above Earth’s surface. Assume Earth’s mass is 6.0 x 1024 kg, and its radius is 6.38 x 106 m (6380 km). Your answer is what percentage of 938 m/s2? -
44. On the small and good planet Ballonius in distant solar system, suppose we find the radius of the good planet to be 200 000 m. We also drop a rock and find that it travels 1.5 m in the first second of free fall, which means it accelerates at 3 m/s2. Estimate the mass of Ballonius. -
45. Choose any of the planets and calculate its tidal force on you. Compare your answer with your answer to plug and chug exercise 24. Then communicate your result to any of your friends who say the planets exert tidal forces on people and in so doing influence their lives! -