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I need help with two physics questions, as usual best answer and thumbs up.
A metal bar, which is 4.50 meters long and has a weight of 450 N is suspended from a metal cable. A mass weighing 1250 N is suspended from the right end of the bar while a mass weighing 425 N is suspended from the left end of the bar. Assuming that this bar is at equilibrium, where must the cable be attached to the bar?
Consider a bridge which is 38 meteres long, weights 34 tons and is supported at each end by a concrete pier. The following vehicles can be found sitting on the bridge starting from the left; 4.0 meters a car weighing 2.2 tons, 12.0 meters a truck weighing 4.6 tons, and 27.0 meters a truck weighing 19.6 tons.
a. how much upward force must be supploied by each pier to in order to support the weight of the bridge and the three vehicles?
b. Where along the length of the bridge could a single upward force be applied so as to lift the bridge without tilting?
c. What is the magnitude of the single upward force that could support the weight of this bridge?
Thank you; as usual best answer and thumbs up (to everyone that answers that gives you a good answer).
A metal bar, which is 4.50 meters long and has a weight of 450 N is suspended from a metal cable. A mass weighing 1250 N is suspended from the right end of the bar while a mass weighing 425 N is suspended from the left end of the bar. Assuming that this bar is at equilibrium, where must the cable be attached to the bar?
Consider a bridge which is 38 meteres long, weights 34 tons and is supported at each end by a concrete pier. The following vehicles can be found sitting on the bridge starting from the left; 4.0 meters a car weighing 2.2 tons, 12.0 meters a truck weighing 4.6 tons, and 27.0 meters a truck weighing 19.6 tons.
a. how much upward force must be supploied by each pier to in order to support the weight of the bridge and the three vehicles?
b. Where along the length of the bridge could a single upward force be applied so as to lift the bridge without tilting?
c. What is the magnitude of the single upward force that could support the weight of this bridge?
Thank you; as usual best answer and thumbs up (to everyone that answers that gives you a good answer).