$0,000kg$ stunt plane performs a loop$-$the$-$loop, flying in a a$-$diameter vertical circle. At the point where the plane is straight down, its speod is $55\frac{m}{s}$ and it is speeding up at of $12\frac{m}{s}$ per second.

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Part A

What is the magnitude of the net force on the plane? You can neglect air resistance.

Express your answer with the appropriate units.

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Part B

What angle does the net force make with the horizontal? Let an angle above horizontal be positive and an angle below horizontal be negative.

Express your answer in degrees.