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Unformatted text preview: Problem 2: Four forces (A m D) act about ajoint center (J). Based on the ﬁgure to the right,
which of the following are true and which are false? Reminder: The 111agnilude Qfa 101"qu is its
absoluie value. (5) X T F: che D p1oduces a counte1 clockwise
torque about J X T F: Force A has a larger moment arm about J than force C has MT _X_F: If forces B and C are equal, the magnitudes
of the torques that they produce about J are also equal MT F: If the magnitudes of the t01ques produced by
forfes B and D about J are equal then fo1ce Bis 1a1ge1
than fmce D. CANNOT BE ANSWERED! EF THE
SMALL ANGLES MADE BY D AND B Wl'l‘ll
RESPECT TO THE ROD ARE EQUAL THEN THlS lS TRUE. ﬁT __X_F: Forces A and B produce torques in the same direction about J Explanations:
Force A has a larger moment arm about J than force C has The moment arm of force from a given point is deﬁned as the perpendicular distance ﬁom the point to the line of me Yb ? lac: 3(1th 1. PM L023 l": M7" i
1
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 Fall '08
 Frey
 Biomedical Engineering

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