Q8:- The torque exerted on the crank of two stroke engine is given by the equation ( T= 14224.5 + 2256.3 sin 20 – 1864 cos 20 ) N.m where e is the crank angle of the displacement from the i.d.c. Assuming the resisting torque to be uniform, determine:- (a) the power of the engine when the speed is 150 rpm, (b) the mass moment of inertia of the flywheel if the speed variation is not to exceed ± 0.5% of the mean speed and (c) the angular acceleration of the flywheel when the crank has turned 30° from the i.d.c.

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A: Solution:   Both the parts are solved with necessary explanation below:

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.