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Question 44008

posted 9 months ago

*15-8. The 1.5-Mg four-wheel-drive jeep is used to push two identical crates, each having a mass of 500 kg. If the coefficient of static friction between the tires and the ground is µ, = 0.6, determine the maximum possible speed the jeep can achieve in 5 s without causing the tires to slip.The coefficient of kinetic friction between the crates and the ground is µ̟ = 0.3.

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Question 44009

posted 9 months ago

15-34. The car A has a weight of 4500 lb and is traveling to the right at 3 ft/s. Meanwhile a 3000-lb car B is traveling at6 ft/s to the left. If the cars crash head-on and become entangled, determine their common velocity just after the collision. Assume that the brakes are not applied during collision.

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Question 44010

posted 9 months ago

•15-53. The 20-lb cart B is supported on rollers of negligible size. If a 10-lb suitcase A is thrown horizontally onto the cart at 10 ft/s when it is at rest, determine the length of time that A slides relative to B, and the final velocity of A and B. The coefficient of kinetic friction between A and B is µk0.4.

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Question 44007

posted 9 months ago

15-2. The 12-Mg “jump jet" is capable of taking off vertically from the deck of a ship. If its jets exert a constant vertical force of 150 kN on the plane, determine its velocity and how high it goes in i = 6 s, starting from rest. Neglect the loss of fuel during the lift.

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Question 44192

posted 9 months ago

The 5-lb collar is released from rest at A and travels along the frictionless guide. Determine the speed of the collar when it strikes the stop B. The spring has an unstretched length of 0.5 ft.

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Question 44191

posted 9 months ago

The 30-lb block A is placed on top of two nested springs B and C and then pushed down to the position shown. If it is then released, determine the maximum height hto which it will rise.

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Question 44190

posted 9 months ago

The 2-kg pendulum bob is released from rest when it is at A. Determine the speed of the bob and the tension in the cord when the bob passes through its lowest position, B.

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Question 44582

posted 10 months ago

The block rests at a distance of 2 m from the center of the platform. If the coefficient of static friction between the block and the platform is µ, = 0.3, determine the maximum speed which the block can attain before it begins to slip.Assume the angular motion of the disk is slowly increasing.

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Question 44584

posted 10 months ago

The 0.2-kg pin P is constrained to move in the smooth curved slot, which is defined by the lemniscater = (0.6 cos 2theta) m. Its motion is controlled by the rotation of the slotted arm OA, which has a constant clockwise angular velocity of theta= -3 rad/s. Determine the force arm OA exerts on the pin P when theta= 0°. Motion is in the vertical plane.

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Question 44583

posted 10 months ago

If the 10-kg ball has a velocity of 3 m/s when it is at the position A, along the vertical path, determine the tension in the cord and the increase in the speed of the ball at this position.

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