Suppose you are going to program a computer to carry out an iterative calculatio

Question

Suppose you are going to program a computer to carry out an iterative calculation of motion involving nonconstant forces. Which of the following calculations should be done before starting the repetitive "loop" calculations? O Update the (vector) momentum of each object O Update the (vector) position of each object O Calculate the (vector) forces acting on the objects Specify the initial (vector) momentum of each object Define constants such as G O Specify the initial (vector) position of each object Specify the mass of each object o specify an appropriate value for the time step t Inside the repetitive "loop", assuming that we use the final velocity in each time interval as the approximation to the average velocity in that time interval, what should be the sequence of calculations? 1: -Select 2: Select 3: -Select

Explanation / Answer

According to the given problem,

a.)

Ans: D, E, F, G, H.

Reason: One possible exception is H: At the beginning you may not have enough information to define the time step. Some sims use adaptive time-step determination which depends on observed parameters such as natural frequency or acceleration.

b.)

Ans:

1.) Calculate the (vector) Forces acting on the objects.

2.) Update (vector) momentum of each object.

3.) Update (vector) position of each object.

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