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a woman is pulling a suitcase by exerting a force 40N at an angle of 20 degrees above the horizontal. The suitcase has a mass of 15kg, and a constant friction of 15N opposes the motion. She starts with an initial speed of 0 and moves the suitcase a distance of 20m. Find the speed of the suitcase at the end of the path.
Determine the critical load of a round wooden dowel that is 0.9m long and has a diameter of (a) 10mm (b) 15mm. Use E=12GPa
A particular crest vertical curve has long been criticized as being unsafe. Its length is 400 ft. The prevailing speed on the crest vertical curve is 50 mph. In its present condition, its tangent grades are +2% and -3%.
A 3 kg mass is attached to one end of a 1 m long cord. The other end of the cord is attached to the center of a rotating disk (with radius greater than 1 m) that has a very large constant angular velocity.
Assume the actual water temperature for calibrating a 1/3 ft3 measure was 65 degrees F. If you had used a water temperature of 75 degrees F for your calibration, how much error would there be in your volume calculation (both in ft3 and as a percen..
Find the magnitude and direction of the force the cable exerts on the pin for the pulleys
the rigid bar abcd is supported by a pin at B and restrained by identical steel bars at C and D, each of area 250mm^2. if the temperature is increased by 80C, determine the force P that will cause the bar at c to be stress-free.
If the flowrate is Q = 25 ft^3/s and the upstream depth is 2 ft, determine the downstream depth. Sketch the specific energy diagram and indicate its important characteristics. Note that the specific discharges are different.
The coefficient of static friction between each crate and the ground is 0.25 The crates are next to each other connected by a rope and then from the other end one has a P force going up at an angle of 30 degrees
the bailey stone works employs six people. assumming that the density of uncompacted waste is 480 kg/m^3, determine the annual volume of solid waste produce by the stone works assumming a waste generation rate of 1 kg/cap*d.
A CU triaxial test with σc = 20 psi is performed on a sand and a deviator stress of 80 psi fails the specimen. Previous tests revealed that the effective friction angle for this sand is 35°. Calculate the pore water pressure at failure.
A wave has a height of 1.5 m in water 5 m deep and a wave period of 6 s. Plot the horizontal component of velocity, the vertical component of acceleration, and the dynamic pressure at a point 2 m below the still water level versus time for a 6-s i..
a ball is thrown with a valocity of 30 m/s at an angle of 40 degrees above the horizontal from the top of a 100m tall building. what is balls velocity when it lands. (neglect air resistance in both cases) DO NOT USE 2D projectile motions, only work ..
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