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A man pulls his child up in a rope swing by throwing the lose end of the rope (the end without the child) over a branch and walking backwards away from the tree. The rope is 16 m long and the tree limb is 8 m above the man's center of gravity where he holds the rope. Suppose that the man begins at rest right next to the child and backs away with an acceleration of 0.2 m/s^2. Determine the speed of the child when he is 4 m above the man.
At the reference temperature, three identical rods of length L form a pin jointed truss in the shape of an equilateral triangle, ABC. Determine the angle theta as a function of delta T, the temperature increase of the rod AB.
for a uniformly loaded square area, what is the stress to load ratio at a depth of 2B below the CENTER of the loaded area
Soda Ash and QuickLime, A lime-soda softening plant treats a flow of 150 MGD, and the water has 86mg/l Ca2+, 35 mg/L Mg2+, 299 mg/L HCO3- and 6mg/l CO2.
The driver of a car traveling up a 2% grade at an initial speed Vo applied the brakes abruptly and the vehicles slid to a complete stop at an average deceleration of 8 ft/s^2. Was the pavement wet or dry
A crane is used to lift a concrete pipe weighing 10kN into place. For precision positioning, the worker at C can apply up a 800N force to cable AC. Determine the largest distance d the concrete pipe may be moved.
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.00 Hz. Ignoring the mass of the spring, what is the mass of the fish?
A bicycle rider would like to compare the effectiveness of candilever hand brakes (use figure a) versus V brakes (figure part b). (a) Calculate the braking force Rb at the wheel rim for each of the bicycle brake systems.
The student strikes the sign at a speed of 25 mi/h. if the student was travelling at 65 mi/h when the sign was first spotted, what was the student's associated perception reaction time
A dye test reveals that the specific discharge between the two wells is about 2.75 m/day. if the wells are 45m apart, What type of aquifer material do you expect in this location
if the rolling resistance is 1/100 of the weight of the car, determine the compression of each spring when the car is momentarily brought to rest spring 1 500kN/m spring 2 300kN/m and distance between springs and car 30m
The Washington Monument is 169 m tall. What is the stress in the lowermost rock if it is made of Georgia granite?
Calculate the Air flow required in CFM to transfer 5,396 BTU/Hour in an HVAC duct given that the temperature difference (Delta-T) between the room and the supply air is 21 DegF.
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