The connecting rod is attached to the piston by a 20-mm-diameter pin at B and to the crank shaft by a 50-mm-diameter bearing A. If the piston is moving upwards, and the coefficient of static friction at the contact points is µs = 0.3 , determine the radius of the friction circle
![1708_9eed60b6-1a10-4852-a210-d8891fff1102.png](https://secure.tutorsglobe.com/CMSImages/1708_9eed60b6-1a10-4852-a210-d8891fff1102.png)