Engineering

Engineering, 12.07.2019 20:30, oglilbrandon

A120 kg machine is mounted on a spring of stffness 7.68x10 n/m with no viscous damping. during operation the machine develops a harmonic force at a frequency of 100 rad/s. is it better to use an accelerometer of natural frequency 600 rad/s or a seismometer of natural frequency 600 rad/s to measure the vibrations? explain.

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Engineering, 06.07.2019 04:20, nataliastrong3846

Amachine of mass 140 kg is mounted on springs of stiffness 1.4x10° n/m and in parallel witha viscous damper of unknown damping coefficient. the machine is subject to a harmonic excitation of 200sin150t n. the phase angle is measured as 2.58 rad. what is the damping coefficient of the viscous damper?

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Engineering, 11.07.2019 04:20, cyni

A120 kg machine is mounted on a spring of stiffness 7.68x10 n/m with no viscous damping. during operation the machine develops a harmonic force at a frequency of 100 rad/s. is it better to use an accelerometer of natural frequency 600 rad/s or a seismometer of natural frequency 600 rad/s to measure the vibrations? explain.

Answers: 2

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Engineering, 11.07.2019 04:20, mastsa

A120 kg machine is mounted on a spring of stiffness 7.68x10 n/m with no viscous damping. the machine is subject to a harmonic excitation force. at what excitation frequency will the response of the system have an unbounded growth of amplitude?

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Engineering, 28.10.2019 21:31, manyah6189

An industrial sewing machine (having mass m) is mounted on springs (with stiffness k) and dampers (with damping coefficient b) to decrease the force transmitted to the floor. the input force acting on the sewing machine during operation is denoted by f(t), while the vertical motion of the machine is denoted by y(t). the sewing machine mass is 150 kg. suitable spring and damper values must be selected so that the vertical motion of the machine is sufficiently small

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A120 kg machine is mounted on a spring of stffness 7.68x10 n/m with no viscous damping. during opera...

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