## Physics Olympiads Series Problem 17

- Category: Olympiads
- Written by fisikastudycenter

Fisikastudycenter.com, Physics Olympiads Problem Series in mechanics, newton's law, acceleration and contact force for beginner level.

**Problem 17**

Three blocks (m_{A} = 3 kg, m_{B} = 5 kg and m_{C} = 2 kg that are touching each other in a frictionless ramp with θ = 37°, shown in the figure below.

A force F of 75 N is applied on m_{A}. Find the system acceleration, use sin 37 ° = ^{3}/_{5} and the acceleration due to gravity g = 10 m/s^{2}

**Problem Source** : Fisikastudycenter.com-Modifikasi Soal Tes Seleksi Olimpiade Fisika Tingkat Kabupaten /Kota Tahun 2011

**Discussion**

Draw all acting forces on the three block, combine the three as a system.

Apply newton's law to find the system acceleration.

**prepared by**:

Fisika Study Center

**Try This Problem!**

Three blocks (m_{1}, m_{2} dan m_{3}) that are touching each other on a frictionless ramp with θ, see the figure.

A force F is applied at m_{1}. Find the system acceleration, show the answer in F, m_{1}, m_{2}, m_{3}, θ and g !

** Problem source :** Fisikastudycenter.com-Modification of Indonesian Physics Olympiads - District / City Level Year 2011