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Mechanical Engineering

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Q: The flexible cable used to tether the balloon shown in Fig. PS-104 weighs 7.0 N/m and is 100 m long....

A: Given data: *The weight of the cable per metre is W=7 N/m. *The vertical buoyant force of the balloo...

Q: Determine the magnitudes of the projected components of the force F = [60i + 12j - 40k]...

A: Given data: Force, F = 60i + 40j – 12k Writing the positions of point A,B and C, in vector form, ...

Q: Define mechanical efficiency.

A: Mechanical efficiency: Mechanical efficiency is defined as how much the input energy converts into t...

Q: Consider a TV set that consumes 120 W of electric power when it is on and is kept on for an average ...

A: Given: The average time per day TV is kept on is t=6 h The power consumes by the TV is P=120 W The u...

Q: Determine the principal stresses and the absolute maximum shear stress.

A: The stresses are given as, The principal stresses are written as,

Q: Please help me with this question, the question asks to find force FAB and FAC.

A: Consider the diagram shown below. Here,

Q: 6-54. Locate the center of mass of the assembly. The assembly consists of a cylindrical center core,...

A: Calculate the masses of each part A, B and C separately and their respective z coordinate separately...

Q: What is mechanical efficiency? What does a mechanical efficiency of 100 percent mean for a hydraulic...

A: Mechanical efficiency: Mechanical efficiency is defined as the comparison of the energy at the inlet...

Q: 5. A mild steel shaft is subjected to a bending moment M = 400N.m and torque T = 300N.m . The equiva...

A: Write the given data:

Q: RS-9. The 8-mm-diameter bolt is made of an aluminum alloy. It fits through a magnesium sleeve that h...

A: Given data: The inner diameter of the bolt is di=12 mm. The outer diameter of the bolt is d0=20 mm. ...

Q: Water flowing through a sluice gate undergoes a hydraulic jump, as shown. The velocity of the water ...

A: Let us consider that the width of the channel is sufficient in order to neglect the end effects. The...

Q: Long cylindrical steel rods (ρ = 7833 kg/m3 and cp = 0.465 kJ/kg·°C) of 10-cm diameter are heat trea...

A: Given: The density of the steel rod is ρ=7833 kg/m3 The specific heat capacity of the steel rod at c...

Q: When a 20-lb weight is suspended from a spring, the spring is stretched a distance of 4 in. Determin...

A: Calculate the stiffness of the spring by using the relation for force in a spring. Here, F is the f...

Q: 17-17. Determine the location y of the center of mass G of the assembly and then calculate the momen...

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Q: load of 30kN/m. The second and fourth spans remain unloaded. Calculate the bending moments at B and ...

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Q: A rigid plate, having a weight of 100 lbs acting at its center, is connected to a 'ball and socket' ...

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Q: A worker slowly moves a 50-kg crate to the left along a loading dock by applying a force P at corner...

A: Consider the free body diagram of the crate as shown below.

Q: Explain how the maximum possible heat transfer rate ???? in a heat exchanger can be determined when ...

A: Click to see the answer

Q: Explain the Conservation of mass principle for an ordinary bathtub.

A: Solution: The conservation of mass principle for a control volume states that the net mass transfer...

Q: Determine the equivalent state of stress on an element which represents (a) the principal stresses, ...

A: Given, σy = -30 ksi σx = 0 ksi σxy = 10 ksi

Q: What happens when a shaft having a circular cross-section is subjected to a torque?

A: When the torque is subjected to the shaft, the shear stress is generated in the shaft, and this gene...

Q: Use the rectangular component method to solve the fol- lowing problems. Determine the magnitude R of...

A: Given data: F1 = 160 N F2 = 180 N Considering the given diagram:

Q: 1. A particle is displaced 60cm toward the north and is then given a second displacement of 90cm dir...

A: Since you have asked multiple questions in a single request we would be answering only the first que...

Q: How The product pressure × volume has energy units.

A: Step 1: Write the units SI units of pressure and volume.

Q: You are part of a team working in a machine parts mechanic’s shop. An important customer has asked y...

A: Click to see the answer

Q: A piston–cylinder device contains 2.2 kg of nitrogen initially at 100 kPa and 25°C. The nitrogen is ...

A: Given, Mass of Nitrogen (m) = 2.2 Kg P1 = 100kPa T1 = 25°C=25+273=298K PV1.3 = Constant

Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass...

A: Given: The initial pressure of the nitrogen gas in the compressor is P1=80 kPa The final pressure of...

Q: oil has a spc.gravity of 0.94 with dynamic visc. of U=0.0096 N.sm/^2 flows in a 90 mm diamater pipe ...

A: Given that, Calculating the velocity of the oil inside the pipe,

Q: The device shown is used to mix soils in order to provide in-situ stabilization. If the mixer is con...

A: Given Data: The inner diameter of the shaft is d = 3 in. The outer diameter of the shaft is D = 4.5...

Q: *14-76. The spring has a stiffness k = 50 N/m and an unstretched length of 0.3 m. If it is attached ...

A: Given Data: The stiffness of the spring is k = 50 N/m. The unstretched length of the spring is t = ...

Q: A coastal power plant takes in cooling water through avertical perforated manifold, as in Fig. . The...

A: Calculate the sink strength using the relation with the depth of water. Here, Q is the volume flow ...

Q: There are four additive terms in an equation, and their units are given below. Which one is not cons...

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Q: The maximum allowable value of each of the reactions is 180 N. Neglecting the weight of the beam, de...

A: Drawing the FBD of the given figure: Here, RA = Reaction at point A RBY = Vertical reaction at poin...

Q: An air cannon uses compressed air to propel aprojectile from rest to a final velocity. Consider an a...

A: Given data as per question Mass =10-gram velocity of compressed air = 300 m/s Volume of storage tan...

Q: A sluice gate with free outflow is used to control the discharge rate of water through a channel. De...

A: Write the assumptions of the flow. The flow is steady or quasi-steady. The channel is sufficiently ...

Q: For the bracket and loading of Prob. 4.7, determine the smallest distance a if the bracket is not to...

A: When bracket is not to move, the reaction force at A will be zero i.e. the bracket will be in equili...

Q: An aluminum canoe moves horizontally along the surface of a lake at 3.5 mi/h. The temperature of the...

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Q: Fill the blanks with proper word

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Q: 16-97. If the hub gear H and ring gear R have angular velocities wn = 5 rad/s and wg = 20 rad/s, res...

A: According to the given diagram, the arm OA rotates about a fixed point O. Draw a diagram showing the...

Q: *12–196. The motor at C pulls in the cable with an acceleration ac = (3r²) m/s², where t is in secon...

A: Write the given data: Draw the free body diagram: Where point C represents the movement of the cab...

Q: A 7-hp (shaft) pump is used to raise water to an elevation of 15 m. If the mechanical efficiency of ...

A: The mechanical efficiency of the pump is η=0.82 The height of the water to be pumped is H=15 m The i...

Q: 12–99. The missile at A takes off from rest and rises vertically to B, where its fuel runs out in 8 ...

A: Given data: Time for fuel to run out , t = 8 s The slope of the graph gives the ratio of accelerat...