1. A silo 20 feet tall is partially with liquid having a specific gravity of 0.85. Compute for the force acting on a 4-in diameter steel plate at the bottom if there is an air gap in the silo measuring 4 inches. Your final answer should be in psi.
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- On a rough surface, Daniel pushes a carton with a mass of 30.0kg. The force F that is he applies is 608N with an angle of 55.0 degrees with the horizontal. In a time of 4s, the block's speed increases from 0.15m/s to 2.68m/s. a) Draw a free body diagram for your calculations b) Find the coefficient of kinetic friction between the flood and the block.A 400 lb block is resting on a rough horizontal surface for which the coefficient of friction is 0.40. Determine the force P required to cause motion to impend if applied the block (i) horizontally or (ii) downward at 30 degrees with the horizontal.=(iii) What is the minimum force is required to start themotion. *No figurecompute the force acting on a 2m diameter gate which is inclined 60 degree from the vertical if the height of oil above the bottom of the gate is 3m sp.gr of oil = 0.87.
- What is the bending moment from the controlling ASD load combination with dead load moment MD=5,000 lb-in and live load moment ML=10,000 lb-in? (units=lb-in) 15,000 10,000 5,000 22,00012. A cubical float, 1.22 m on a side, weighs 1.78 kN and is anchored by means of a concrete block that weighs 6.67 kN in air. If 229 mm of the float is submerged when the chain connected to the concrete is taut, what rise in water level will lift the concrete off the bottom? Concrete weighs23.56 kN/m3.A cylindrical container 3.0m high and 1.0m diameter , full of water reinforced with two hoops 50cm each end. What is the tension in the upper hoop?
- Manny Pacquiao owns a hydraulic press for his training to box in the presidential race. It is filled with an hydraulic oil with relative density of 0.82. Can you draw the FBD of the mechanism and compute the actuating force needed to counteract the 10kN punch weight?Determine the load that can be lifted by the system shown if R2 is increased to 25 cm.What force is necessarry to lift a thin wire ring 45 mm in diameter from a water surface at 20 °C? Neglect the weight of the wire.
- Situation 2. A hollow cylinder 1.0 m in diameter and 2.0 m long weighs 3285 N. a. How many kN of lead weighing 110 kN/m³ must be fastened to the outside bottom to make the cylinder float vertically with 1.50 m submerged in fresh water? b. How many kN of lead weighing 110 kN/m³ must be placed inside the cylinder to make the cylinder float vertically with 1.50 m submerged in fresh water? c. What additional load must be placed inside the cylinder to make the top of the cylinder flush with the water surface?A 128.8 lb homogeneous plank is placed on two homogeneous, cylindrical rollers, each of weight 32.2 lb. The system is released from rest on a surface inclined 30-degrees to the horizontal (see figure below). Determine the initial acceleration assuming no slipping occurs. Does this initial acceleration change with time?An oil drum of 600 mm diameter and 1.5 long is to be rolled across a footstep of 100mm high. Find the minimum push required at the top of the drum. Take density of theoil as 1 kg/litre. Neglect weight of the drum.