An interstellar spacecraft from an advanced civilization is hovering above Earth, as shown in Fig. 12.35. The ship consists of two pods of mass m separated by a rigid shaft of negligible mass and one Earth radius ( R E ) long. Find (a) the magnitude and direction of the net gravitational force on the ship and (b) the net torque about the center of mass, (c) Show that the ship's center of gravity is displaced approximately 0.083 R E from its center of mass. FIGURE 12.35 Problem 59
An interstellar spacecraft from an advanced civilization is hovering above Earth, as shown in Fig. 12.35. The ship consists of two pods of mass m separated by a rigid shaft of negligible mass and one Earth radius ( R E ) long. Find (a) the magnitude and direction of the net gravitational force on the ship and (b) the net torque about the center of mass, (c) Show that the ship's center of gravity is displaced approximately 0.083 R E from its center of mass. FIGURE 12.35 Problem 59
An interstellar spacecraft from an advanced civilization is hovering above Earth, as shown in Fig. 12.35. The ship consists of two pods of mass m separated by a rigid shaft of negligible mass and one Earth radius (RE) long. Find (a) the magnitude and direction of the net gravitational force on the ship and (b) the net torque about the center of mass, (c) Show that the ship's center of gravity is displaced approximately 0.083 RE from its center of mass.
Imagine you are out for a stroll on a sunny day when you encounter a lake. Unpolarized light from the sun is reflected off the lake into your eyes. However, you notice when you put on your vertically polarized sunglasses, the light reflected off the lake no longer reaches your eyes. What is the angle between the unpolarized light and the surface of the water, in degrees, measured from the horizontal? You may assume the index of refraction of air is nair=1 and the index of refraction of water is nwater=1.33 . Round your answer to three significant figures. Just enter the number, nothing else.
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