A block A of mass 14 kg moves alongg an inclined plance that makes an angle of `30^(@)` with the horizontal . This block is connected to another block B of mass 14 kg by a taut massless string that runs around a massless frictionless pulley . The block B moves down with constant velocity . Calculate force of friction and coefficient of kinetic friction .

Explanation

To solve the problem, we will follow these steps:

### Step 1: Analyze the forces acting on block A
Block A is on an inclined plane with an angle of \(30^\circ\). The forces acting on block A are:
- The gravitational force (\(mg\)) acting downwards.
- The normal force (\(N\)) acting perpendicular to the inclined plane.
- The tension (\(T\)) in the string acting up the incline.
- The frictional force (\(F_k\)) acting down the incline.
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