Answer:
![m=70.55\ kg](https://img.qammunity.org/2020/formulas/physics/high-school/8ku5h52rwq55ss6027d7s8f2ghwiwmm1t2.png)
Step-by-step explanation:
Given that,
Speed of the plane, v = 30 m/s
Radius of the circular path, r = 100 m
The centripetal force acting on the plane, F = 635 N
To find,
The mass of the pilot and the plane.
Solution,
When an object moves in a circular path, the force acting on it is called centripetal force. Its formula is given by :
![F=(mv^2)/(r)](https://img.qammunity.org/2020/formulas/physics/middle-school/yfb6xasn48vwjnhqudu5m44tqu8puxr49i.png)
![m=(Fr)/(v^2)](https://img.qammunity.org/2020/formulas/physics/college/mdp8g3b51m0ahfgxnfl02wgxceosdmun9g.png)
![m=(635* 100)/((30)^2)](https://img.qammunity.org/2020/formulas/physics/high-school/x3mipazx4tzep9dzwdcpm3qsgxqgvixd74.png)
![m=70.55\ kg](https://img.qammunity.org/2020/formulas/physics/high-school/8ku5h52rwq55ss6027d7s8f2ghwiwmm1t2.png)
So, the mass of the pilot and the plane is 70.55 kg.