B
Bjwert
Guest
A heavy ring of mass 5kg is threaded on a fixed rough horizontal rod. The coefficient of friction between the rod and the rod is 1/2. A light string is attached to the ring and pulled downwards with a force acting at a constant angle of 30 degrees to the horizontal. The magnitude of the force is T newtons, and is gradually increased from zero. Find the value of T such that is just sufficient to make the equilibrium limiting.