Question

Solve and please explain steps elaborately

(17%) Problem 2: The pressure exerted by a phonograph needle on a record is surprisingly large, due to the very small width of the needle If the equivalent of 0.95 g is supported by a needle, the tip of which is a circle 0205 mm in radius, what pressure is exerted on the record, in pascals? Grade Summary Deductions Potential 92 ted cotan asin0 acos0 atanO acotan sinh0) cosho tanh0 cotanhO 7 8 9 1 2 3 Attempts remaining: (2% per attempt) detailed view 2% 2% °Degrees Radians Submit Hint I give up! Hints:-for a--dedaction. Hints remaining:- Feedback: deduction per,feedback. What is the definition of pressure? What is the force being applied here, and what is the area? Submission History All Date times are displayed in Eatern Standard Time Red sabmission date times indicate Late work Date 1 May 20, 2018 703 2 May 20,2018 7.06 PMP 224313 3 May 20,2018 707 PM P 22 104 Time Answer Hints ?-23275 P 23280 . what is the definition of pressure? What is the force being applied here, and what is the area? P-22430 P-22000

Answer 1

P = F/A = mg/pi r^2 = (0.95 times 10^-3)(9.8)/pi(0.205 times 10^-3)^2 = 7.05 times 10^4 pa

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