A magnetic needle of magnetic moment 6 .7 × 10 - 2   A   m 2 and moment of inertia 7 .5 × 10 - 6   kg   m 2 is performing simple harmonic oscillations in a magnetic field of 0 . 01   T . Time taken for 10 complete oscillations is:

Question

A magnetic needle of magnetic moment 6 .7 &#215; 10 - 2 &#160; A &#160; m 2 and moment of inertia 7 .5 &#215; 10 - 6 &#160; kg &#160; m 2 is performing simple harmonic oscillations in a magnetic field of 0 . 01 &#160; T . Time taken for 10 complete oscillations is:

Aicharya · Accepted Answer

Time period of oscillating magnetic needle is

T = 2 π \sqrt{\frac{I}{M B}}

= 2 π \sqrt{\frac{7.5 \times 10^{- 6}}{6.7 \times 10^{- 2} \times 0.01}} \sec

= 0.6647 \sec

Time for oscillations,

t = 10 T = 6.647 \sec = 6.65 \sec

A magnetic needle of magnetic moment 6 .7 × 10 - 2   A   m 2 and moment of inertia 7 .5 &#215…

Solution

A magnetic needle of magnetic moment 6 .7 &#215; 10 - 2 &#160; A &#160; m 2 and moment of inertia 7 .5 &#215…

Solution

A magnetic needle of magnetic moment 6 .7 × 10 - 2 A m 2 and moment of inertia 7 .5 &#215…