As shown in the figure below, seven forces all with magnitude |F| are applied to
ID: 1635274 • Letter: A
Question
As shown in the figure below, seven forces all with magnitude |F| are applied to an irregularly shaped object. Each force is applied at a different location on the object, indicated by the tail of the arrow: the directions of the forces differ. The forces are separated by distance w, h, and d as indicated in the figure. For the following questions, circle the value of the torque for the corresponding force relative to location "X" (x to the right, y up, z out of the page). (a) The torque from force (1): (b) The torque from force (2): (c) The torque from force (3): (d) The torque from force (4): (e) The torque from force (5): (f) The torque from force (6): (g) The torque from force (7): (h) At time t = 0 the angular momentum of the object, relative to relative to location "X", is zero. Determine the total angular momentum of the object, relative to "X", a short time Delta t later.Explanation / Answer
We know that torque is given by:
T = r x F
r is the position vector of the point of application of force. The direction of the torque is perpendiclumar to the plane of r and F.
1 ; 2 and 3 will have same magnitude determined by:
torque = (wi + hj) x F i = (h F) k N-m
For a,b and c correct choice is:
Torque = (h F) z
d) Torque = wi x F j = (w f) k
Hence, Torque = (w F) z
e) Torque = 0 x F = 0
f) Torque = wi x F i = 0
g)None of these
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.