THERMO ERL

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The input piston and output plunger of a hydraulic car lift are at the same level, as shown in the drawing. The cross-sectional area of the input piston is 12 cm2, while that of the output plunger is 1200 cm2. The force F1 applied to the input piston has a magnitude of 160 N. What is the weight W of the car? Neglect the weight of the piston and plunger

Springs OA and OB are originally unstretched in a vertical position. Find the horizontal force, F, when the springs are held in the position as shown, given: k = 550 lb/ft, L1 = 0.6 ft, L2 = 1.3 ft

Two smooth spheres P, Q each of radius 25 cm and weighing 500 N, rest in a horizontal chaen having vertical walls for the pressure exerted on the wall and floor at points of contact A, B and C. If the distance between the walls is 90 cm, make calculations Ans- 90 cm 500 N 500 N

Q4: The diagram shows the open bonnet of a car vortical force V ijlull. The bonnet is held open at an angle of 60° to the horizontal by a vertical force V applied at one end of the bonnet (shown on the diagram). The bonnet is 0.90 m long, has a weight of 25 N and its center of gravity G is car bonnet- 0.35 m from the hinge at O. 0.90m 1) On the diagram, draw and label the two forces other than V acting on the bonnet. 635m 2) By taking moments about 0, Proof that the vertical force V applied at the end of the bonnet is 9.7 N. horizonlal - hinge O 3) Calculate the magnitude of the force acting at the hinge O.

A block and sphere are connected by a cord that passes over a pulley as shown. Neglect friction and assume the cord is massless. Take m1 = 2.00 kg, m2 = 7.65 kg, and ? = 49.0°. A triangular structure is oriented such that its base rests upon a horizontal surface, its left side is perpendicular to its base, and its right side forms an incline of angle ?. A pulley is attached to the structure's apex. Two objects are connected by a cord that passes over the pulley. A circular object labeled m1 is attached to the to the left end of the cord and hangs freely. A rectangular object labeled m2 is attached to the end of the cord and rests upon the incline. (a) What are the magnitude of acceleration (in m/s2) of the block and sphere? _____m/s2 (b) What is the tension (in N) in the cord? (Enter the magnitude.) ____N (c) What is the speed (in m/s) of each object 2.25 s after being released from rest? ____m/s   (d)What If? If the incline under m2 is rough, what is the minimum value…

A metal piston is placed in the top of a cylinder containing a gas and a liquid, as shown in the figure below, compressing the gas. Assume that the interface between the piston-cylinder is frictionless and forms a perfect seal so that none of the gas can escape. (a) Derive the equation for the absolute pressure of the gas. Identify each variable and use the subscripts P, G, and L to variables specific the cylinder, gas or liquid. State any and all assumptions. (b) Calculate the absolute pressure of the gas (in kPa) for the case where the disc is made of copper, the gas is air, the liquid is water, the diameter of the cylinder is 10cm and the height of the piston is 3cm. Values for needed constants can be found in Chapter 1 of your text, along with Tables A-1 and A-3. piston gas liquid piston gas liquid

Use the following figure for both questions below. 1. The end of a tank containing water is vertical and has the shape of the bottom of a half circle of radius 10m. Determine the hydrostatic force against the end of the tank. 2. A milk truck carries milk with density 64.6lb/f in a horisontal cylindrical tank with diameter 6/t. F'ind the force exerted by the milk on one end of the tank when the tank is half full.

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1. The PASCO human arm model is configured such that the cord representing the bicep is perfectly vertical and the forearm is at 90° (in the figure to the right, the cord is not quite vertical). A mass of 100 g is attached to the hand. Draw a free-body diagram on the figure to the right showing all forces which act on the forearm. The force of the bicep F on the arm The force of the humerus FH on the arm The weight of the forearm W The mass in the hand Wm 100 g Be careful to draw the force vectors with tails beginning at the point where the force is actually applied to the forearm. 2. Consider the free body diagram below. Determine the perpendicular component F̟ of the force F exerted by the biceps brachii on the forearm. Use the fact that cos 0 = H/B to write this component directly in terms of the humerus length H and the biceps length B. H 3. If the forearm is in equilibrium, then there is no angular acceleration and therefore the sum of the torques applied to the forearm must be…

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