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# (Solved): QUESTIORA A castiton filywheel has a density of 8000 kg per cubic metre. The outer diameter of the f ...

QUESTIORA A castiton filywheel has a density of 8000 kg per cubic metre. The outer diameter of the flywheel is 840 mm and the inner diameter is 540 mm with a width of 200 mm . The ??ywheel has a hollow shaí. Calculate the following: 4.1 The mass of the flywheel 4.2 The moment of inertia of the flywheel QUESTION 5 A worm drive has a worm with a three-start screw thread and a pitch diameter of 50 mm . The worm gear has 32 teeth and the module for the worm and worm gear is 10 mm . The efficiency of the drive is

`80%`

. Calculate the following: 5.1 The pitch-circle diameter of the worm gear 5.2 The centre distance between the shafts 5.3 The coefficient of friction between the worm axis and the worm gear QUESTION 6 A vehicle ascends an incline of 20 degrees at uniform speed. The mass of the vehicle is 1,5 ton with a wheel base of 3 m and a centre of gravity of 560 mm above the road level. The centre of gravity is

`1,3m`

behind the front axle.. Calculate the following: 6.1 The minimum coefficient of friction between the rear wheels and the road 6.2 The power required by the vehicle to ascend the incline at a speed of

`20k(m)/(h)`

and a transmission efficiency of

`75%`

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