9.17 | To get up on the roof, a person (mass 70.0 kg) places a 6.00-m aluminum ladder (mass 10.0 kg)
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9.18 | In Figure 9.20, the cg of the pole held by the pole vaulter is 2.00 m from the left hand, and
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9.14 | A sandwich board advertising sign is constructed as shown in Figure 9.34. The sign’s mass is
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7.25 | How high a hill can a car coast up (engine disengaged) if work done by friction is negligible
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9.9 | A person carries a plank of wood 2.00 m long with one hand pushing down on it at one end with
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9.13 | Suppose a 900-kg car is on the bridge in Figure 9.33 with its center of mass halfway between
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The Sound of Inner Peace 7 | Relaxing Music for Meditation, Yoga, Stress Relief, Zen & Deep Sleep
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7.8 | Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a
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5.18 | A contestant in a winter sporting event pushes a 45.0-kg block of ice across a frozen lake as
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A uniform steel beam has a mass of 940 kg. On it is resting half of an identical beam, as shown in F
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9.15 | What minimum coefficient of friction is needed between the legs and the ground to keep the
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7.3 | Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant
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8.45 | Two identical pucks collide on an air hockey table. One puck was originally at rest. (a) If
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