Q1: -Find the moment of inertia about X, Y axis as shown in fig 1? 02: The loddor ond th porson weigh 30 lb ond 190 1h respootivelv The gontor off moss of the 12 €t

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Q1: -Find the moment of inertia about X, Y axis as shown in fig 1?
Q2: - The ladder and the person weigh 30 lb and 180 lb, respectively. The center of mass of the 12-ft
ladder is at its midpoint. The angle Assume that the wall is smooth on the ladder.
(a) If what is the magnitude of the friction force exerted on the ladder by the floor as shown in fig 2?
(b) What minimum coefficient of static friction between the ladder and the floor is necessary for the
person to be able to climb to the top of the ladder without slipping?
Q3: - A particle moves along a straight line such that its position is defined by s ( - 6t + 5) m.
Determine the average velocity, the average speed, and the acceleration of the particle when t= 6 s.?
Q4: - The 3500-lb automobile shown in Fig. 3 travels down the 10 inclined road at a speed of 20 ft/s. If
the driver jams on the brakes, causing his wheels to lock, determine how far s the tires skid on the
road. The coefficient of kinetic friction between the wheels and the road is m = 0.5.?
160
20 ft/s
mm
1 40 mm
200
40
mm
mm
10
40 mm
120
mm
Fig 1
Fig 2
Fig 3
Transcribed Image Text:Q1: -Find the moment of inertia about X, Y axis as shown in fig 1? Q2: - The ladder and the person weigh 30 lb and 180 lb, respectively. The center of mass of the 12-ft ladder is at its midpoint. The angle Assume that the wall is smooth on the ladder. (a) If what is the magnitude of the friction force exerted on the ladder by the floor as shown in fig 2? (b) What minimum coefficient of static friction between the ladder and the floor is necessary for the person to be able to climb to the top of the ladder without slipping? Q3: - A particle moves along a straight line such that its position is defined by s ( - 6t + 5) m. Determine the average velocity, the average speed, and the acceleration of the particle when t= 6 s.? Q4: - The 3500-lb automobile shown in Fig. 3 travels down the 10 inclined road at a speed of 20 ft/s. If the driver jams on the brakes, causing his wheels to lock, determine how far s the tires skid on the road. The coefficient of kinetic friction between the wheels and the road is m = 0.5.? 160 20 ft/s mm 1 40 mm 200 40 mm mm 10 40 mm 120 mm Fig 1 Fig 2 Fig 3
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