it 4-Newton\'s Laws of Motion Begin Date: 2/1/2018 10:00:00 AM- Due Date: 2/8/20

Question

it 4-Newton's Laws of Motion Begin Date: 2/1/2018 10:00:00 AM- Due Date: 2/8/2018 11:00:00 PM End Date: 5/4/2018 11 (7%) Problem 12: A gymnast with a inass of 49-kg jumps on a trampoline. What force does a trampoline have to apply to accelerate her straight up at 71 ms2 in Newtons? Fi Grad Dedu Poter sinO cos0 tan0 cotan asin0acos0 atan0 acotanO sinh0 cosho tan cotanho Subn Atten (0l 4 56 detai " Degrees Radians Submit Hint I give up! Feedback: deduction per feedback. Hints:--deduction per hint Hints retnamng.

Explanation / Answer

Solution-

Since trampoline has an upward acceleration,

the net force is equal to the force that the trampoline exerts minus her weight.

Weight = 49 * 9.8 = 480.2 N

Use the following equation to determine the upward force that the trampoline exerts.

F – Weight = mass * acceleration
F – 480.2 = 49 * 7.1
F = 480.2 + 347.9

= 882.1 N

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