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HOME > Sample Questions > Test Engineering Module > Formalising Technical Interrelationships > Example 5
Instructions Example 1 Example 2 Example 3 Example 4 Example 5 Example 6
The initial weight of a rocket is WI. After the engines are started (t=0), fuel is expelled; the amount of fuel is proportional to time. When the fuel has been burned up, at the point in time T, the engines are turned off. The weight of the rocket has decreased to WT.
Which of the following equations applies for the rocket weight W at the point in time t in the time interval 0<= t <= T ?
Degree of difficulty: high
Instructions Example 1 Example 2 Example 3 Example 4 Example 5 Example 6
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Accordingly, if:
.