Linear and Rotational Motion(adsbygoogle = window.adsbygoogle || []).push({});

A load of mass 60kg is hoisted vertically by means of a light rope running over a pulley and is accelerated from 3 to 6m/s while traveling through a distance of 6 meter. If the resistance due to friction is 50N determine

A) The pulling force in the rope

B) The work done

C) Average power required to accelerate this load

So far all i have is

F=Mg-Ma=M(g-a)

Do i need to include my 50N friction resistance?

i have F=60(9.81-6)= 228.6N

For my work done i have

Work done=ForcexDistance?

Which i work out to be W.D.=(228.6+50)x6=1671.6W

For average power i have

Average power=W/t

and intera torque =Ia

However i dont know whaere to substitute in the values

Im really stuuggling with this question and its importan for me to get correct if i want to progress onto the next course. Any hints will be much appreciated.

Thankyou

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# Homework Help: Linear and Rotational Motion Question (really struggling)

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