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Engineering Mechanics: Dynamics-Solution Manual [EXP-5177]

289 SOLVED PROBLEMS

Question: 2.50

A 1.5 kg rock is released from rest at the surface of a calm lake. If the resistance offered by the water as the rock falls is directly proportional to the rock’s velocity, the rock’s acceleration is a =  g – Cd v/m, where g is the acceleration of gravity, Cd is a constant drag coefficient, v is

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We begin by observing tha \begin{aligned}a=...

A 1500 kg car is traveling up the slope shown at a constant speed. Knowing that the maximum power output of the car is 160 hp, at what speed can the car travel if air resistance is negligible? Also, knowing that 1 L of regular gasoline provides 34.8 MJ of energy, how many liters of gasoline will be

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The power delivered by the car engine, Power, [lat...

A 1600 kg car, when on a rectilinear and horizontal stretch of road and when the tires do not slip, can go from rest to 100 km/h in 5.5 s. Assuming that the car travels on a straight stretch of road with a 40% slope and that no slip occurs, determine how long it would take to attain a speed of 100

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We start the solution of this problem by determini...

A 1600 kg car, when on a rectilinear and horizontal stretch of road, can go from rest to 100 km/h in 5.5 s. (a) Assuming that the car travels on such a road, estimate the average value of the force acting on the car for the car to match the expected performance. (b) Recalling that the force

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A 180 gr (7000 gr = 1 lb) bullet goes from rest to 3300 ft/s in 0.0011 s. Determine the magnitude of the impulse imparted to the bullet during the given time interval. In addition, determine the magnitude of the average force acting on the bullet.

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A 180 lb man A and a 40 lb child C are at the opposite ends of a 250 lb floating platform P with a length Lfp = 15 ft. The man, child, and platform are initially at rest at a distance δ = 1 ft from a mooring dock. The child and the man move toward each other with the same speed υ relative to the

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A 180 lb man A and a 40 lb child C are at the opposite ends of a 250 lb floating platform P with a length Lfp = 15 ft. The man, child, and platform are initially at rest at a distance δ =1 ft from a mooring dock. The child and the man move toward each other with the same speed υ0 relative to the

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A 2600 lb car on straight horizontal road goes from 0 to 60 mph in 7 s. Neglecting aerodynamic drag, if the force propelling the car is constant during the acceleration phase, determine the power developed by this force 7 s after the beginning of the motion.

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A 3 kg collar is constrained to travel in the horizontal plane along a frictionless ring of radius R = 0.75 m. The spring attached to the collar has a spring constant k = 21N/m. Treating the collar as a particle, neglecting air resistance, and knowing that at A the collar is at rest, determine the

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A 30.000 lb airplane is flying on a horizontal trajectory with a speed υ0 = 650 mph when, at point A, it maneuvers so that at point B it is set on a steady climb with θ=40°and a speed of 600 mph. Assuming that the change in mass of the plane between A and B is negligible, determine the impulse that

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