An airplane at night has a speed of v = 180 m/s. The windshield offers ? = 1.2 r

Question

An airplane at night has a speed of v = 180 m/s. The windshield offers ? = 1.2 radians view. A star is seen sweeping horizontally across the field of view in 35 s. The pilot's weight while on the ground is 735 N. What is the magnitude of force that he is experiencing in this airplane?

Answer            

810 N

272 N

870 N

660 N

1200 N

                            a.           

810 N

                            b.           

272 N

                            c.           

870 N

                            d.           

660 N

                            e.           

1200 N

Explanation / Answer

Here

Weight at Earth = 735 N

Therefore

Mass = 735/9.8

= 75 Kg

Now Due to Centrifugal Force there is decrease in weight

So in the Aircraft

Weight = weight at Earth - Centrifugal Force

= 735 - mw^2*r

= 735 - m*w*(wr)

As we know

v = wr

Therefore

Weight = 735 - m*w*v

= 735 - 75*(1.2/35)*180

= 272 N

So B Option is Correct

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