9.14 | A sandwich board advertising sign is constructed as shown in Figure 9.34. The sign’s mass is
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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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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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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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9.10 | A 17.0-m-high and 11.0-m-long wall under construction and its bracing are shown in Figure
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9.6 | Suppose a horse leans against a wall as in Figure 9.30. Calculate the force exerted on the
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7.24 | A 60.0-kg skier with an initial speed of 12.0 m/s coasts up a 2.50-m-high rise as shown in
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9.30 | A person working at a drafting board may hold her head as shown in Figure 9.39, requiring
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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 traffic light hangs from a pole as shown in Fig 9 59 The uniform aluminum pole AB is 7 20 m long
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9.8 | Calculate the magnitude and direction of the force on each foot of the horse in Figure 9.30
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