مسألة فزياء لغات علي الصوت جامدة وشك هههههه

[x.man_vc]

المسألة فكرتها حلوة او الأصح رخمة بس حاول تحلها:
A string of lenght 20cm vibrates in four segments , its stretched by a cylinder of length 10cm. If the cylinder and the string are made of the same material andthe radius of the cylinder is 10 times the raduis of the wire find the Frequency if g=10.(100 HZ)