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TQGuru

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determine

1- the tension required in the cable

2- angular acceleration in rads/sec

3- Accelerating torque in Nm at the winding drum shaft required to accelerate the system

4- The total driving torque in Nm required at the winding drum shaft to produce the required motion of the whole system

I got 1 as 90,185N

2 - 1.33 rads/s

3- 5411Nm

4 is 5531Nm but I am not sure how to derive at this answer

The question then goes on to velocity time diagram like questions and asking for sketches

the hoist covers a distance of 20m accelerating at 0.8ms from rest to a max speed then decelerates at the same rate, i.e for 10m constant acceleration

the part of the question I am struggling with is where it asks for the maximum velocity of the hoist, this is 4ms but I am beat for knowing the calculation as I don't have an specific time, Could anyone help me with the formula required to achieve the answer of 4ms?

Many thanks!