A 400-Kg Block Is Suspended from the Roof of an Elevator

question 42

Multiple Choice

A 4.00-kg block is suspended from the roof of an elevator. A 2.00-kg block is suspended from the 4.00-kg block. The tensions in strings 1 and 2 are labeled and .
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Use this exhibit to answer the following question(s) .
-When the elevator accelerates downwards with an acceleration of 2.20 m/s², the magnitudes of and are

• A)30.4 N; 15.2 N.
• B)39.2 N; 19.6 N.
• C)45.6 N; 15.2 N.
• D)48.0 N; 24.0 N.
• E)72.0 N; 24.0 N.

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