Answer Happy

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6. A scaffold of mass 80 kg and length 7.0 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 65 kg stands at a point 2.5 m from one end. TA т. B 2.5 m (a) Draw the free body diagram. (b) Find the tension in the nearer cable, TA. (C) Find the tension in the farther cable, Te [51 [5] [5] 7. A satellite orbits a planet of unknown mass in a circle of radius 2.0x107m. The magnitude of the gravitational force on the satellite from the planet is F = 80 N. What is the kinetic energy of the satellite in this orbit? [51 8. At what altitude above Earth's surface would the gravitational acceleration be 4.9 m/s [5] 9. A 6090 kg space probe moving nose-first toward Jupiter at 105 m/s relative to the Sun fires its rocket engine, ejecting 80.0 kg of exhaust at a speed of 253 m/s relative to the space probe. What is the final velocity of the probe? [51 10. In the figure below water flows through a horizontal pipe and then out into the atmosphere at a speed of v2 = 15.0 m/s. The diameters dy and dz of the pipe are 5.0 cm and 3.0 cm respectively. V OF d1 (a) What volume of water flows into the atmosphere during a 10 min period? (b) In the left section of the pipe, at what speed is the water flowing in the pipe (vi)? [5] [51 7