Question1) Locate all the instant centers for the mechanism shown in figure given below:
![490_Mechanism.jpg](https://secure.tutorsglobe.com/CMSImages/490_Mechanism.jpg)
Question2) Locate all the instant centers for the mechanism shown in figure given below:
![30_Mechanism_1.jpg](https://secure.tutorsglobe.com/CMSImages/30_Mechanism_1.jpg)
Question3) A bolloon filled with helium initially at 27°c and 1 bar, is released and rise in the atmosphere until the helium is at 17°c and 0.9 bar. Assuming that helium behaves as an ideal gas, determine the ratio of the final volume to the volume.