OCR MEI Further Mechanics B AS 2019 June — Question 1

Exam BoardOCR MEI
ModuleFurther Mechanics B AS (Further Mechanics B AS)
Year2019
SessionJune
TopicWork, energy and Power 2

1 A small object of mass 5 kg is attached to one end of each of two identical parallel light elastic strings. The upper ends of both strings are attached to a horizontal ceiling.
The object hangs in equilibrium at R , with the extension of each string being 0.1 m , as shown in Fig. 1. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{4acb019b-e630-4766-9d7f-39bc0e174ba1-2_620_394_580_242} \captionsetup{labelformat=empty} \caption{Fig. 1}
\end{figure}
  1. Find the stiffness of each string. One of the strings is now removed and the object initially falls downwards. The object does not return to R at any point in the subsequent motion.
  2. Suggest a reason why the object does not return to \(R\).