A vertical double acting steam engine develops 75 kW at 250 rpm. The maximum fluctuation of energy is 30 per cent of the work done per stroke. The maximum and minimum speeds are not to
vary more than 1 per cent on either side of the mean speed. Find the mass of the flywheel required,
if the radius of gyration is 0.6 m
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unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.

answer:

science is the study of the nature and behavior of natural things and the knowledge that we obtain about them. a science is a particular branch of science such as physics, chemistry, or biology. physics is the best example of a science which has developed strong, abstract theories.

pseudoscience is a collection of beliefs or practices mistakenly regarded as being based on scientific method.

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