A Spring Scale Is Fastened to the Ceiling of a Railway

question 46

Multiple Choice

A spring scale is fastened to the ceiling of a railway car. When a 1.0-kg block is hung from the scale, it reads 12 N and is oriented as shown in the figure. What is the approximate acceleration of the car as measured by an observer at rest on the ground outside of the car?

• A)7 m/s² to the right
• B)7 m/s² to the left
• C)12 m/s² to the right
• D)12 m/s² to the left
• E)It is impossible to calculate since the angle \(\theta\) has not been given.

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