1. As the 3,6 Mg flat-bed truck starts from rest with constant acceleration, the 750-kg crate slides 3m to the edge of the bed in the time that it takes the truck to acquire a velocity of 40 km/h in a distance of 15 m up the incline. find the coefficient of kinetic friction between the crate and the truck bed.
2. The tank of water is at rest on a horizontal surface when a 250-N force is applied as shown. if water issues from the rear discharge pipe at the rate of 20 kg.s with a velocity of 2,4 m/s relative to the the opening in the diection shown, calculate the initial acceleration a of the tank if its mass at the start is 300 kg. neglect the rotational inertia of the wheels.
3. The uniform rod AB is placed on the horizontal truck bed and leans on the vertical back of the cab. if the coefficient of static friction at each end is 0,4, determine the maximum acceleration a which the truck may have without slipping the rod.
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