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

Discover the angle of twist - uniformly varying shaft, Discover the angle o...

Discover the angle of twist - uniformly varying shaft: A uniformly varying shaft of length 2 m is subjected to a torque of 2 kN-m. The diameter at the ends shall be 60 mm and

Carnot cycle - thermodynamics, Carnot Cycle - thermodynamics: Carno ...

Carnot Cycle - thermodynamics: Carno t Cycle: Sadi carnot; this is based on second law of thermodynamics introduced the concepts of reversibility and cycle in the year 1824

Welding variables-welding current, WELDING VARIABLES The following major ...

WELDING VARIABLES The following major process variable play an important role in shaping the weld bead and the resultant weld metal in submerged arc welding: a. Welding cu

Submerged arc welding, SUBMERGED ARC WELDING The optimum performance of w...

SUBMERGED ARC WELDING The optimum performance of welded vessels and structures in service have led to the full exploitation of automatic welding processes. This arc welding is on

Optimization, consider the following LPP max z=9x1+8x2+5x3 subject to 2x1+3...

consider the following LPP max z=9x1+8x2+5x3 subject to 2x1+3x2+x3 5x1+4x2+3x3 x1,x2,x3>_0 (a)solve using simlex method (b)hence using the sesitivity analysis

Wire feed system, Wire Feed System The submerged arc welding machine of t...

Wire Feed System The submerged arc welding machine of the wire feed control may be of the following types: 1. Voltage sensitive system 2. Constant wire feed The voltage sensiti

Iterature review, I have literature review and the title is "the effect of...

I have literature review and the title is "the effect of fluid cooling on the performance of building integrated photovoltaic thermal systems. Using some BIPVT prototypes measure

Hartnell Governor, How we could build the working model of hartnell governo...

How we could build the working model of hartnell governor?

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