# Q.NO.2: One end of a light inextensible thread of length l is held stationary over a frictionless horizontal floor while a small bead tied at the other end of the thread is describing a circular path with a uniform speed ${v}_{0}$ on the floor as shown in the figure. The upper end of the thread is suddenly pulled vertically upwards with a constant acceleration ${a}_{0}$. If the bead does not leave the floor, find magnitude of its acceleration immediately after the upper end of the thread is pulled.

• -1
What are you looking for?