Hey Guys need your help on two questions 1.A bug crawls outward from the center

Question

Hey Guys need your help on two questions
1.A bug crawls outward from the center of a compact disc sinning at200 revolutions per minute. The coefficient of static frictionbetween the bug's stucky feet and the disc surface is 1.2. what is the speed of the bug before it starts slipping? 2. Suppose a contruction worker uses a rope and pulleysystem to hoist constrion material to an upper floor. He knows heshould lift the load at a constant so as to not break the rope. Therope is rated to withstand 500 N of tension. What is theminimum time the construction worker can hoist 93 kg of material,initially at rest, 8 m up, without exceeding the rated tension inthe rope? Neglect friction & the inertia of the rope &pulley. Thanks for your help. Hey Guys need your help on two questions
1.A bug crawls outward from the center of a compact disc sinning at200 revolutions per minute. The coefficient of static frictionbetween the bug's stucky feet and the disc surface is 1.2. what is the speed of the bug before it starts slipping? 2. Suppose a contruction worker uses a rope and pulleysystem to hoist constrion material to an upper floor. He knows heshould lift the load at a constant so as to not break the rope. Therope is rated to withstand 500 N of tension. What is theminimum time the construction worker can hoist 93 kg of material,initially at rest, 8 m up, without exceeding the rated tension inthe rope? Neglect friction & the inertia of the rope &pulley. Thanks for your help. Thanks for your help.

Explanation / Answer

1) it starts slipping=> F=.N =mg we have: F= m.a =m.2 R => The speed: v=R =F/(m) =g/ = 0.56 m/s 2) I wonder how can hoist 93kg-911.4 N with tension T=500 N? Are you sure it is exactly information?

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