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# Spring Scales

Please see the attachment for the diagrams.

13. Now two forces are applied to the cart with two different spring scales as shown below. The spring scale Fa still reads 10.5 N.

The cart now moves toward the right with an acceleration toward the right of 2.50 m/s^2. What does spring scale Fb read? Show your calculations, and explain.

14. Again two forces are applied to the cart with two different spring scales as shown below. The spring scale Fa still reads 10.5 N.

The cart movies with a constant velocity toward the right. What does spring scale Fb read? Show your calculations and explain.

15. Again two forces are applied tot he cart with two different spring scales as shown below. The spring scale Fa still reads 10.5 N.

The cart movies toward the left with an acceleration toward the left of 2.50 m/s^2. What does spring scale Fb read? Show your calculations and explain.

#### Solution Preview

Note 1. The wording above problem 13 was cut off, so we do not have the mass of the cart. I will assign a mass of M= 1.5 kg to the cart.

Note 2. Although one scale pulls forward and the other pulls backward, they must fit into Newton's ...

#### Solution Summary

This solution is provided in 213 words. It applies Newton's second law and equations to the problems to solve for force.

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