WEEK 6, LAB 3 - Exercise 1 Questions & Answers

Exercise 1:

i)                    If engineered or programmed badly, BigDog would fall over. Watch the full video again, and describe how BigDog’s legs move while walking– ie. what is the sequence of leg movements for one complete step? Use the terms BL, BR, FL, and FR for the back-left, back-right, front-left and front-right legs.

Answer: Firstly, the Big Dog's right front leg crossed over to it's left front leg. And then, the Big Dog's left front leg separate away from it's right front leg, and the back right  leg cross over to its back left leg. Moving on, the Big Dog's right front leg cross over to its left front leg again, and the back left leg separates away from its back right leg. Lastly,  it returns to a similar pose as the first action when it was first kicked. This allows the Big Dog to return to a balanced pose.

ii) Explain how this sequence of movements manages to balance BigDog’s body weight.

The centre of gravity depends on height of the object and the surface area.