- A Possible Means Of Space Flight Is To Place A Perfectly Reflecting Aluminized Sheet Into Orbit Around The Earth And The 1 (20.86 KiB) Viewed 47 times
A possible means of space flight is to place a perfectly reflecting aluminized sheet into orbit around the Earth and then use the light from the Sun to push this "solar sal. Suppose a sail of area A 5.60 x 105 m² and mass m 4,900 kg is placed in orbit facing the Sun. Ignore all gravitational effects and assume a solar intensity of 1,370 W/m² (a) What force (in N) is exerted on the sail? (Enter the magnitude.) ✔N (b) What is the sail's acceleration? (Enter the magnitude in um/s².) 1042.8 kem (c) Assuming the acceleration calculated in part (b) remains constant, find the time interval (in days) required for the sail to reach the Moon, 3.84 x 10 m away, starting from rest at the Earth. days (d) What If? If the solar sall were initially in Earth orbit at an altitude of 240 km, show that a sail of this mass density could not escape Earth's gravitational pull regardless of size. (Calculate the magnitude of the gravitational field in m/s².) m/s2 (e) What would the mass density (in kg/m2) of the solar sail have to be for the solar sail to attain the same initial acceleration as that in part (b)? kg/m²