Question

Please help me answer these circular motion problems.

8-2 Name: Sec: PHY211 Pre Laboratory Problems: Crcular Motion 20 Given the example above (Chapter 7 Motion in a Circle, Knight Text) solve the following problem: A 20g steel weight is placed on the edge of a 30cm diameter plastic disk. The coefficient of static friction between the steel weight and plastic disk is 0.4. At what angular velocity, o will the weight slide off the disk? Your solution should include "known", a pictorial representation, a physical representation and a free-body diagram. Hint: Apply Newton's second law using vro, instead of v, as in the example. lblict 7d plasc disk s od Af wha anameter plastic disk. he 1) Pictorial Representation a. sketch showing important points in the motion b. coordinate system c. symbols for knowns and unknowns Known: Find:oma 2) Physical Representation a. motion diagram b. force identification c. free-body diagram 3) Mathematical Representation a. start with Newton's first or second law b. include other information as needed c. solve! 2nd law for r-axis 2nd law for z axis

Answer 1

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f nov Ing fence an inuen side nothernakic Refra sent.lion Seh by using Neston's laJ c-