Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Mechanical Engineering Expert

1) A machine part having a mass of 2.5 kg implements the vibration in a viscous damping medium. A harmonic exciting force of 30 N acts on the part and causes a resonant amplitude of 14mm, with a period of 0.22 Sec. Determine the damping coefficient when the frequency of exciting force is altered to 4 Hz. Find the increase in the amplitude of forced vibration upon the removal of the damper.

2)  In a vibrating system, the total mass of the system is 25 kg. At speed of system and eccentric mass have a phase difference of 90° and the corresponding amplitude is 1.5 cm. The eccentric unbalanced mass of 1 kg has a radius of rotation 4 cm. Determine:

i) The natural frequency of the system.

ii) The damping factor,

iii) The amplitude at 1500 rpm and

iv) The phase angle at 1500 rpm.

3) A shaft of diameter 10 mm carries at its centre a mass of 12 kg. It is supported by two short bearings, the centre distance of which is 400 mm. Compute the whirling speed:

a) Neglecting the mass of the shaft, and

b) Taking the mass of the shaft also into consideration.

c) The density of shaft material is 7500 kg/m3.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M913404
  • Price:- $55

Guranteed 36 Hours Delivery, In Price:- $55

Have any Question? 


Related Questions in Mechanical Engineering

A series of calibration tests is conducted on a pressure

A series of calibration tests is conducted on a pressure gage. At a known pressure of 1000 psia it is found that 30 percent of the readings are within 1 psia of the true value. At a known pressure of 500 psia, 40 percent ...

Q1 a list three classical methods of optimization in

Q1) a) List three classical methods of optimization in engineering design. b) Describe the type of finite elements used to solve 3 dimensional problems in solid mechanics. Supply examples of the application. c) Describe ...

The solution to problem isshow that bernoullis equation

The solution to Problem is Show that Bernoulli's equation applied between sections 1 and 2 does not give this result. Derive all expressions for the change in total head across a hydraulic jump. Problem:- As can often be ...

An athlete at high performance inhales of air at 100 atm

An athlete at high performance inhales of air at 1.00 atm and 298 K. The inhaled and exhaled air contain 0.50 and 6.2% by volume of water, respectively. For a respiration rate of 32 breaths per minute, how many moles of ...

Some experimental data for shearing stress tau and shear

Some experimental data for shearing stress τ and shear strain rate γ obtained for a particular non-Newtonian fluid at 80?F are shown below. Please plot these data and fit a second-order polynomial to the data using graph ...

Calculate the total lift force on the arctic hut shown

Calculate the total lift force on the Arctic hut shown below as a function of the location of the opening. The lift force results from the difference between the inside pressure and the outside pressure. Assume potential ...

A sample of propane c3h8 is placed in a closed vessel

A sample of propane (C 3 H 8 ) is placed in a closed vessel together with an amount of O 2 that is 2.15 times the amount needed to completely oxidize the propane to CO 2 and H 2 O at constant temperature. Calculate the m ...

1 how do the magnitudes of the biceps force b and joint

1. How do the magnitudes of the biceps force B and joint reaction J change if the total weight w of the forearm and hand are included in the analysis and are assumed to be uniformly distributed over the forearm length L? ...

1 in more than one paragraph but less than a page discuss

1. In more than one paragraph but less than a page, discuss some of the failure modes experienced in the collapse of the World Trade Center and how they might have been prevented. 2. A truss ABC supports a load W at join ...

Whats the maximum proof strength in ksi of a j429 gr 8 bolt

What's the maximum proof strength (in ksi) of a J429 GR 8 bolt and that of an ASTM A490 bolt? What's the proof strength of a metric Class 10.9 bolt in MPa? What is the ultimate strength and the yield strength (in MPa) of ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen