Engineering, 20.01.2020 18:31 onlyceleste2430

With axle and spokes of negligible mass and a thin rim, a certain bicycle wheel has a radius of 0.39 m and weighs 33 n. it can turn on its axle with negligible friction. a man holds the wheel above his head with the axle vertical while he stands on a turntable that is free to rotate without friction. the wheel rotates clockwise, as seen from above, with an angular speed of 50.8 rad/s, and the turntable is initially at rest. the rotational inertia of wheel + man + turntable about the common axis of rotation is 2.1 kg·m2. the man's free hand suddenly stops the rotation of the wheel (relative to the turntable). determine the resulting angular speed and direction of rotation of the system. (include the sign. take clockwise as seen from above to be positive.)

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Answers: 1

Answer

Engineering, 04.07.2019 18:10

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Answers: 2

Answer

Engineering, 04.07.2019 18:20

Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg

Answers: 2

Answer

Engineering, 04.07.2019 19:10

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.

Answers: 2

Answer

You know the right answer?

With axle and spokes of negligible mass and a thin rim, a certain bicycle wheel has a radius of 0.39...

Questions