Statement I: A block hangs from the ceiling by cord C, with a similar cord D tied below it (see figure). A sudden sharp jerk on cord D snaps cord D itself. Statement II: A slow steady pull on cord D r

Question

Statement I: A block hangs from the ceiling by cord C, with a similar cord D tied below it (see figure). A sudden sharp jerk on cord D snaps cord D itself. Statement II: A slow steady pull on cord D raises the tension in cord C above that in D, so cord C snaps first.

TestHub · Accepted Answer

A sharp jerk cannot accelerate the massive block quickly, so cord D takes the impulse and breaks.

A steady pull adds to the tension of cord C, which already carries the block, so C breaks first.

Both statements are true.

Option A.

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