Find out the number of revolution, Mechanical Engineering

Assignment Help:

Find out the number of revolution:

A flywheel of mass 20 kg and radius 100 mm is made to rotate at 600 RPM. Determine the KE of the flywheel. If the frictional couple at its bearing is 10 N.m., find out the number of revolution it shall make before coming to rest.

Solution

ω = 600 rpm = 10 r.p s.

= (10 × 2 π) rad / sec. = 62.8 rad / sec.

I m =     M a 2 / 2

= 20 × ((0.1)2 /2) = 0.1 kg m 2 = 197 N m.

If frictional couple at the bearing is CF, the W. D. by friction is (CF  × θ) to bring it to rest while

C F  × θ = KE of the flywheel

10 × θ = 197

∴ θ= 19.7 radians.

No. of cycles of rotations = θ /2 π = 3.14 cycles.


Related Discussions:- Find out the number of revolution

Shear stress, At apoint in apiece of elastic materialdirect stress of90mega...

At apoint in apiece of elastic materialdirect stress of90meganewton permeter square tensile and 50 mega newton per meter sqare compressive applied on mutually perpedicular planes.d

Determine the tension and reaction in cable - mechanics, Q:  The12m boom A...

Q:  The12m boom AB weight 1 KN, the distance of center of gravity G is 6 m from point A.  For the position given, determine the tension T in cable and reaction at B.

Define the advantages of electro discharge machining, Define the Advantages...

Define the Advantages of Electro discharge machining 1. The surface finish obtained is very good. 2. This process can be used for any hard material. 3. Materials likes ca

Thermodynamics, we can use in proove of energy is a propertyof system we ca...

we can use in proove of energy is a propertyof system we can use (E) instead of (dQ-dW)

Stone slab culverts with abutments, Stone Slab Culverts with Abutments and ...

Stone Slab Culverts with Abutments and Piers: Where good quality stone slabs are available like granite slabs, they can be used for superstructure of culverts, with suitable

Design loading - unloading facilities in plant layout, Q. Design Loading - ...

Q. Design Loading - Unloading Facilities in plant layout? Loading and unloading areas should be separated. These facilities should be situated on the edge of the site near road

CAPP, Applications of capp

Applications of capp

Advantages of using cam, 1. Greater Design Freedom : Any changes that are ...

1. Greater Design Freedom : Any changes that are required in design can be incorporated at any design stage without worrying about any delays since there would hardly be any i

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd