practice 3 - 1) The uniform rod shown below is held in...

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1) The uniform rod shown below is held in place by the rope and wall. Suppose you know the weight of the rod and all dimensions. Then you can solve a single equation for the force exerted by the rope, provided you write expressions for the torques about the point: A) 1 B) 2 C) 3 D) 4 E) 1, 2, or 3 2) The pull P is just sufficient to keep the 14-N block and the weightless pulleys in equilibrium as shown. The tension T in the upper cable is: A) 14 N B) 28 N C) 16 N D) 9.33 N E) 18.7 N 3) The ideal mechanical advantage (i.e. the ratio of the weight W to the pull P for equilibrium) of the combination of pulleys shown is: A) 1 B) 2 C) 3 D) 4 E) 5
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4) To shear a cube-shaped object, forces of equal magnitude and opposite directions might be applied: A) to opposite faces, perpendicular to the faces B) to opposite faces, parallel to the faces C) to adjacent faces, perpendicular to the faces D) to adjacent faces, neither parallel or perpendicular to the faces E) to a single face, in any direction 5) A projectile is fired straight upward from Earth's surface with a speed that is half the escape speed. If
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practice 3 - 1) The uniform rod shown below is held in...

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