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Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
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6.4 | Moment of Force. Conditions of Equilibrium |
1) Two objects are placed on a massless bar in different distances from the turning point as shown in the figure below.
What is the force F necessary to keep the system in equilibrium at the horizontal position?
Correct Answer: D
2) A 80 N force acts on the left end of a 18 N heavy bar at 370 to the horizontal direction as shown in the figure.
What is the magnitude of the extra weight placed on the right end of the bar necessary to set the equilibrium? Take cos 370 = 0.8 and sin 370 = 0.6.
Correct Answer: D
3) What is m1 + m2 + m3 for the system shown in the figure if it is in equilibrium? The bars are massless.
Correct Answer: B
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