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Eskiboy
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1. A mine cage of mass 1.5 tonnes is accelerated uniformly upwards from a speed of 1.1 m/s to 4.6 m/s in a time of 20 seconds. The winding drum which is 1.5 metres in diameter has a mass of 1.2 tonne and has the dynamic characteristics of a disc.
There is a bearing friction torque of 48 Nm.
For a disc the moment of inertia is given by I = mr^2/2
Determine:
a.) the angle turned by the winding drum[/b]
2.
I = mr^2/2[/b]
3. Struggling to begin any attempt on this question.
alpha = w2^2 - w1^2/2 x sigma?
There is a bearing friction torque of 48 Nm.
For a disc the moment of inertia is given by I = mr^2/2
Determine:
a.) the angle turned by the winding drum[/b]
2.
I = mr^2/2[/b]
3. Struggling to begin any attempt on this question.
alpha = w2^2 - w1^2/2 x sigma?
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