Solved : Period of Swinging Wheel by Spring in Horizontal

Berikut sebuah soal fisika tentang pembuktian:

Original :
Sebuah silinder dikaitkan pada sebuah pegas dengan konstanta k sedang ujung lain pegas di tahan tetap. Sistem silinder pegas ini di letakkan pada bidang datar horizontal kasar sehingga silinder bisa menggelinding tanpa slip. Jika momen inersia silinder bermassa M adalah 1/2 MR^2  dan silindernya mempunyai jari-jari R, maka besar periode pusat massa silinder adalah...

Translated :
A cylinder is attached to a spring with constant k, while the other end of the spring is remain fixed (e.g. :at wall). Spring cylinder system is place on rough horizontal plane so that the cylinder can roll without slipping. If the moment of inertia of the cylinder with mass M is 1/2 MR ^ 2 and the cylinder has a radius R, then the period of the center of mass of the cylinder is the ...
Answer :

Solved : SHM along x-axis;(d2x/dt2) + Ax =0

A point moves with SHM along an x-axis according to the equation

 

The period of this motion is...

Answer:

Solved : An Object Held by 4 Strings in Moving Car

For this post I post a solved question of Physics subject. Here the question :

An object with mass m held by two horizontal strings and two vertical strings inside a stationary vehicle. If the vehicle start to accelerate by a, but the object inside still stay stationary toward the vehicle(object's position didn't change). Then, the distance did the car traveled for t time is...(answer in term of T1, T2, T3, T4, g, and t)

The answer is :