Impulse and Force-Time Graph Problem

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The problem involves calculating the maximum force (Fmax) that results in an impulse of 7.1 Ns using a force-time graph. The impulse is determined by the area under the graph, which is represented as a triangle with the formula 0.5 * Fmax * time. Initially, Fmax was calculated as 1.775 N using an incorrect time value. The error was identified as a misunderstanding of the time axis, which is in milliseconds, leading to the need for a revised calculation. Correctly interpreting the time units is crucial for accurate impulse calculations.
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Homework Statement


09.EX05.jpg

In the figure , what value of Fmax gives an impulse of 7.1 Ns


Homework Equations


1832c91daa867136732d31cc7c988eb0.png



The Attempt at a Solution


Impulse is the integral of force with respect to time which is the same the area under the force-time graph which is given by the area of the triangle: 0.5*Fmax*8s

7.1 Ns = 4s * Fmax
Fmax = 1.775 N

However that's not the right answer. Where did I go wrong? Thanks!
 
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The time axis is in milliseconds.
 
Haha thanks! I never would've noticed that.
 

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