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ust 35nc.theexpertta.com The Expert TA l Human-like Grading, Automated Home I student: ktiankools unce.edu My Aon Chapter 4-A test Begin Date: 51312017 120000 PM-Due Date: 63/2017 59:00 PM End Date: 628/2017 12:59:00 AM (0%) Problem 4: Consider a 75 kg high-jumper. Randomized Variables m 75 kg Calculate the magnitude of the force the jumper must exert on the ground to produce an acceleration 400 times the acceleration upward Grade Summary due to gravity. 0% Potential 100% Submissions sino coso tan0 (D 7 l 8 9 4 5 6 Attempts remaining: 3 OS per attempt) cotano asino acos0 atano acotano sinho 1 2 3 cosh0 tanh0 cotanh0 ODegrees Radians I give up! Feedback: 5% deduction per feedback Hints: 5% deduction per hint. Hints remaining: 3 All content c 2017Expen TA, luc

Explanation / Answer

Let the force be F in upward direction, Downward force is Mxg, and we need an upward acceleration of '4g'. So the equation will be

F - (Mxg) = Mx4g => F = 5Mg = 5x75x9.8 = 3675 N (g=9.8 m/sec2).

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