A light ring of negligible mass is held at the junction of three inextensible strings…
PHYSICS · Multi-part · CBSE · Physics · Laws of Motion · Laws of Motion
Problem
A light ring of negligible mass is held at the junction of three inextensible strings lying in the same plane. Two of the strings are kept taut with tensions 40N and 25N, the angle between their directions being 120∘. The ring remains at rest.
(a) Calculate the magnitude of the tension in the third string and state its direction with respect to the 40N string.
(b) If the string carrying the 25N tension is suddenly cut, the ring (mass 0.50kg) moves under the action of the remaining two strings. Determine the magnitude and direction of its instantaneous acceleration just after the cut.