Question

In: Mechanical Engineering

The upper end of a vertical steel wire 4mm diameter and 2,5 m long is held...

The upper end of a vertical steel wire 4mm diameter and 2,5 m long is held securely. The other end is fixed central to a steel cylinder, 80 mm diameter and of density 7,8 Mg/m3, arranged with its axis vertically. Determine the length of the cylinder to give 0,6 torsional vibration per second.

Solutions

Expert Solution


Related Solutions

a .25 mm diameter wire .2 m long is to be held at 1035 deg C....
a .25 mm diameter wire .2 m long is to be held at 1035 deg C. The wires surface is black. how much electrical power is required to maintain it's temp? The surrounding air and room are both at 20 deg C. The room is also assumed to be black . Find : Raleigh number, nusselt number, HTC and power required to maintain temperature.
A piano wire 0.90 m long and 0.85 mm in diameter is fixed on one end....
A piano wire 0.90 m long and 0.85 mm in diameter is fixed on one end. The other end is wrapped around a tuning peg 3.5 mm in diameter. Initially the wire, whose Young's modulus is 2.4×1010N/m2, has a tension of 30 N . Part A Find the tension in the wire after the tuning peg has been turned through one complete revolution. Express the tension in newtons to two significant figures. T = 166.16   N   SubmitPrevious AnswersRequest Answer Incorrect;...
Suppose a 1-m length of aluminum wire 0.001 m in diameter is held in a horizontal...
Suppose a 1-m length of aluminum wire 0.001 m in diameter is held in a horizontal east-west position (in vertical equilibrium) by an external magnetic eld directed north of strength 1 G = 10-4 T. The density aluminum = 2:70 103 kg/m3 and the resistivity aluminum = 2:65 10?8 m. Also note the volume of a cylinder is Vcyl = r2h. (a) Find the resistance RAl of the aluminum wire. (b) Find the volume VAl of the aluminum wire. (c)...
A 1 m long stainless steel wire has electrical conductivity of (4.05x10^6) Ωm−1, and end-to-end resistance...
A 1 m long stainless steel wire has electrical conductivity of (4.05x10^6) Ωm−1, and end-to-end resistance of (2.1680x10^0)Ω What is the radius of the wire in m?
A wire made from tungsten is 4.5 m long and 0.45 mm in diameter. What is...
A wire made from tungsten is 4.5 m long and 0.45 mm in diameter. What is its resistance at 1500°C?
A soap film in a wire lop is held vertical and viewed under sunlight. The top...
A soap film in a wire lop is held vertical and viewed under sunlight. The top part of the film appears black. With the aid of a diagram, explain, in details, why.
In a galvanised steel water supply line 100 m long and 50 mm in diameter, water...
In a galvanised steel water supply line 100 m long and 50 mm in diameter, water is pumped from a reservoir to a vented storage tank at an elevation 8 m above it. The following fittings are use: 1 hinged foot valve with strainer, 3 x 90? elbows, 2 gate calves (open), 20 screwed sockets, 1 sudden exit. The water viscosity is 1 x 10-6 m2/s and the density is 1000 kg/m3. (a) Calculate the friction factor at a flow...
Problem 3 (36 Pts) The steel pipe is 0.5 m long and has an internal diameter...
Problem 3 (36 Pts) The steel pipe is 0.5 m long and has an internal diameter of 60 mm and an external diameter of 80 mm. The Young’s modulus E is 200 GPa and the Poisson ratio ν is 0.32. The pipe experiences a twisting moment of 8 kNm and a bending moment of 3.5 kNm. 4p a) Sketch roughly how the angle of rotation and vertical displacement change as a function of distance from the free end of the...
A 400-W cylindrical resistance heater is 1 m long and 0.5-cm-diameter. The resistance wire is placed...
A 400-W cylindrical resistance heater is 1 m long and 0.5-cm-diameter. The resistance wire is placed horizontally in a fluid at 20◦C, flowing at a velocity of 20 m/s. Determine the outer surface temperature of the resistance wire in steady operation if the fluid is (a) air and (b) water. Ignore any heat transfer by radiation and evaluate properties of air at 800 K and properties of water at 315 K.
1-What is the resistance of a 5km long copper wire with a diameter of 4mm? a....
1-What is the resistance of a 5km long copper wire with a diameter of 4mm? a. 1.65 ohms b. 0.0015 ohms c. .0065 ohms d. 6.7 ohms 2- three 4mF capacitor are connected in series across a 12 V battery. The total charges stored by this compination of capacitor is A. 24 mC B. 16 mC C. 48 mC D. 144 mC E. None of the above 3. What would be the energy stored in the capacitor in the previous...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT