The ball with mass m = 1kg passes through the inclined rod, which forms an angle of θ = 30 ° with the horizontal direction, If the ball is pushed by a horizontal force of F = 20n, it can accelerate the ball to slide up the bar 1. The sliding friction coefficient between the ball and the inclined rod 2. The acceleration of the ball sliding upward along the rod

The ball with mass m = 1kg passes through the inclined rod, which forms an angle of θ = 30 ° with the horizontal direction, If the ball is pushed by a horizontal force of F = 20n, it can accelerate the ball to slide up the bar 1. The sliding friction coefficient between the ball and the inclined rod 2. The acceleration of the ball sliding upward along the rod

one
Diagonal direction
Because of the uniform sliding, the combined force is 0
F = sin30mg cos30mgu = 0
U = root 3 / 3
2,
Diagonal direction
F = cos30f-sin30mg - (sin30f + cos30mg) u = ma
A = 5 / radical 3