a spring scale (F A ) is attached to the right side of a cart and reads 10.5N th

Question

a spring scale (FA) is attached to the right side of a cart and reads 10.5N the cart moves toward the right with an acceleration toward the right of 3.25m/s2. Now two forces are applied to the cart with two different spring scales. The spring scale FA still reads 10.5N. The cart now moves toward the right with an acceleration toward the right of 5.50m/s2 what does the scale FB read? Show calculations and explain.   a spring scale (FA) is attached to the right side of a cart and reads 10.5N the cart moves toward the right with an acceleration toward the right of 3.25m/s2. Now two forces are applied to the cart with two different spring scales. The spring scale FA still reads 10.5N. The cart now moves toward the right with an acceleration toward the right of 5.50m/s2 what does the scale FB read? Show calculations and explain.  

Explanation / Answer

Remember that SF = ma, so you might want to use that. Since it is accelerating faster than in the case with 3.25N, the scale FB must read a force that is greater than the one in the other case.

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