Question

A bar magnet and a wooden bar (identical in dimension and mass) are released from same height to fall under gravity passing through multiple rings of conducting material. Time taken by bar magnet is T₁ and by wooden bar is T2. Then which is possible out of given options


1) T1 = T2
2) T1>T2
3) T1<T2
4) None of these​

Answer 1

Answer:

3)t1 less than t2

Explanation:

since magnet will try to attract towards wall of the rings

hence the gravitational pull force is affected by that

Answer 2

Answer: The above given answer is wrong. Dont rely on it .The correct answer is T1 > T2 that is option (2)

Explanation:

When bar magnet falls through ring, current is induced in ring (unlike wooden bar) and it behaves as a magnetic dipole, which applies a force on magnet which reduces its speed (Lenz law). so, time taken by bar magnet is more than wooden bar.

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