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Determine the minimum force P to prevent a 30kg rod AB from sliding on a wall. The contact surface at B is smooth, whereas the coefficient of static friction between the rod and the wall at A is Us=0.2. The rod is diognal on the wall from bottom left (B), with the force P applied at B towards the right, to top right (A). It is 4 m across and 3 m up. Making the rod 5 m long.
How many watts of power would it take to heat 1 L of water(weighing 1.0 kg) by 10 degrees Celsius n 1.0 h? Assume no heat losses occur, so all of the energy expneded goes into heating the water.
A concrete mix with a 3 inch slump, w/c (water content) ratio of 0.50, and sand with a fineness modulus of 2.4 contrains 1700 lb/cubic yard of coarse aggregate. Compute the required weight of the coarse
a 150 kg mass is suspended by wires from two hooks. the lengths of the wires have been adjusted so that the wires are each 50º from horizontal. assume that the mass of the wires is negligible.
A rigid rectangular shelf is suspended from a rigid ceiling by mean of four rods of diameter .505 inches. The two rods to the left L1 and L2, are made of steel. The two rods to the right R1 and R2 are made of aluminum.
The dry weight of a core is 28.20 gm. When saturated with a brine having a density of 1.15 gm/cc, the weight increases to 31.50 gm. Calculate the apparent porosities if the matrix is 1) quartz or 2) calcite.
A block of mass m is attached to two springs as shown. Knowing that in each case the block is pulled through a distance x from it's equilibrium postition and released, determine the maximum speed of the block in the subsequent motion.
1.How long is the irrigation boom (in feet) from the center pivot to its farthest extent. 2.If the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 4 days.
plane gate of uniform thickness holds back a depth of water. Find the minimum weight need to keep the gate closed. theta=30degrees L = 3m w = 2m
the flow into the lake is from is from a stream is 300 m3/d andthe flow into the lake from runoff averages 20 m3/d. The lake is used for fishing by the local residents but the pesticides from local farms may damage the fish population.
When the engine of the plane is running, the vertical reaction that the ground exerts on the wheel at A is measured as 616lb . When the engine is turned off, however, the vertical reactions at A and B are 520lb each.
A 32-in.-wide by 0.125-in.-thick by 110-in.-long steel sheet is to be formed into a hollow section by being bent through 360° and having the long edges welded (i.e., butt-welded) together. Assume a cross-sectional medial length of 32 in.
Listed on cramster as ask. There is a car driving through water. Velocity is 12mph. Find h (max water depth) that will alow car to pass. List all assumption and calculations is the problem statement.
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