Please explain and give full solution. Question 3 A rigid object (consider plana

Question

Please explain and give full solution.

Question 3 A rigid object (consider planar motion in free space) is given an angular acceleration by the application ofa couple to the object. Indicate which of the following statements is true. (2 Marks) (i) / There will also be a rectilinear acceleration of the mass centre. l the object has a fixed axis of rotation, the angular acceleration will be the same, regardless f the point on the object at which the axis is located. (ii If the object is free, the resulting angular acceleration will occur about a centroidal axis. (iv) While the magnitude of the applied couple remains steady, the angular acceleration will also be constant

Explanation / Answer

No rectilinear motion as a couple is a pair of equal and opposite forces. If the magnitude of couple changes, the angular acceleration can't be a constant.

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