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Old Oct 13th 2017, 11:12 AM   #1
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Physics- Direction & Magnitude

During an episode of turbulence in an airplane you feel 190 N heavier than usual. If your mass is 78 kg, what are the magnitude and direction of the airplane's acceleration?

For the F=ma, I manipulated the equation and have gotten, a=190N/78kg=2.4 or would the formula be W=ma, hence, 78kg/190N=0.410 is this correct? And how do I solve the other portion of the problem?
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Old Oct 13th 2017, 11:30 AM   #2
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is this correct?
No

I would start with revising the difference between mass and weight.

You can 190Newtons weight by 78 kilogrammes mass and get anything useful.
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Old Oct 13th 2017, 11:37 AM   #3
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So I would just take F=ma=190*78=14820 or W=ma, hence, 78kg/190N=0.410

Last edited by kgilyot; Oct 13th 2017 at 12:18 PM.
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Old Oct 13th 2017, 01:11 PM   #4
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During an episode of turbulence in an airplane you feel 190 N heavier than usual. If your mass is 78 kg, what are the magnitude and direction of the airplane's acceleration?
FBD's attached ...
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Old Oct 13th 2017, 02:42 PM   #5
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Originally Posted by kgilyot View Post
So I would just take F=ma=190*78=14820 or W=ma, hence, 78kg/190N=0.410
no ... check the free body diagrams for guidance in solving this problem. The Normal force is what a weight scale would read for each situation.
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