7. A locomotive (6.4 x 105 kg) is used to pull two railway cars (Figure 11). Railway car 1 (5.0 x 105 kg) is attached to railway car 2 (3.6 x 105 kg) by a locking mechanism. A railway engineer tests the mechanism and estimates that it can only withstand 2.0 x 105 N of force. Determine the maximum acceleration of the train that does not break the locking mechanism. Explain your reasoning. Assume that friction is negligible. ™ car 2 car 1

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7. A locomotive (6.4 x 105 kg) is used to pull two railway
cars (Figure 11). Railway car 1 (5.0 x 105 kg) is attached
to railway car 2 (3.6 x 105 kg) by a locking mechanism.
A railway engineer tests the mechanism and estimates
that it can only withstand 2.0 x 105 N of force. Determine
the maximum acceleration of the train that does not
break the locking mechanism. Explain your reasoning.
Assume that friction is negligible.™ C
car 2
car 1
Transcribed Image Text:7. A locomotive (6.4 x 105 kg) is used to pull two railway cars (Figure 11). Railway car 1 (5.0 x 105 kg) is attached to railway car 2 (3.6 x 105 kg) by a locking mechanism. A railway engineer tests the mechanism and estimates that it can only withstand 2.0 x 105 N of force. Determine the maximum acceleration of the train that does not break the locking mechanism. Explain your reasoning. Assume that friction is negligible.™ C car 2 car 1
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