The 6-kg collar starts from rest at position A, where the coordinates of its center of mas...

The 6-kg collar starts from rest at position A, where the coordinates of its center of mass are (400. 200, 200) mm, and slides up the smooth bar to position B, where the coordinates of its center of mass are (500. 400, 0) mm, under the action of a constant force F = –40i + 70j – 40k (N). How long does the collar take to go from A to B?