One possible means of achieving space fl ight is to place
Chapter 21, Problem 21.104(choose chapter or problem)
One possible means of achieving space fl ight is to place a perfectly refl ecting aluminized sheet into Earths orbit and to use the light from the Sun to push this solar sail. Suppose such a sail, of area 6.00 _ 104 m2 and mass 6 000 kg, is placed in orbit facing the Sun. (a) What force is exerted on the sail? (b) What is the sails acceleration? (c) How long does it take this sail to reach the Moon, 3.84 _ 108 m away? Ignore all gravitational effects and assume a solar intensity of 1 340 W/m2. Hint: The radiation pressure by a refl ected wave is given by 2 (average power per unit area)/c.
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