6 Solved Problems on General Physics I Non Calculus - Exam 3 | PHYS 2010, Exams of Physics

Download 6 Solved Problems on General Physics I Non Calculus - Exam 3 | PHYS 2010 and more Exams Physics in PDF only on Docsity! PHYS 2010-001 Fall 2010 November 11, 2009 Exam 3 ie. “fe _ 1 An electric motor rotating a workshop grinding wheel at a rate of 100 rev/min is switched off. Assume the wheel slows down at a rate of 2,00 rad/s’, a), How long docs il take for the grinding wheel to stop? (10 points) Name, b). How many revolutions does it make while coming gto rest? (10 points) 0 = 27,6 cad ~¢%.o8 cot) C orev + a7. 6 red 27.8 i. rn: ‘ : 2 39 rev | 2 AWkgs a at A 70-kg stant pilot in an airplane diving vertically downward at a constant speed of 85.0 m/s turns vertically upward by following an approximately semicircular path with a radius of 180m. a) What is the apparent weight of the pilot at the bottom of the dive? (10 points) “wg = 6 w wg = an wa mare eee i © \ a dong A = 3,S0-10°# b) What speed should not the pilot exceed (o survive the manenver (10 points)? (The apparent weight should not bc greater than $mg). ed, Jong = m (9+ F) a ws #4 [2 age = 8-9 BOs Page (79 “hs | 3. A4.0-m horizontal weightless rod is supported by a cable 3.0 m from the jaint as shown in the Figure. A 90.0-kp mass hangs freely {rom the right end of the rod. a) Find the tension in the cable supporting the red (20 points). {p= Te Brn Sin BT? ~ 901g B90 Ym SO :