When a magnetic field is first turned on, the flux through a 20-turn loop varies with time according to Φm=5.0t2−2.0t, where Φm is in milliwebers, t is in seconds, and the loop is in the plane of the page with the unit normal pointing outward. (a) What is the emf induced in the loop as a function of time? What is the direction of the induced current at (b) t = 0, (c) 0.10, (d) 1.0, and (e) 2.0 s?

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Ответ:

aliciajackson26

12.07.2020

Physics

The net torque will be "1366.33 Nm".

Explanation:

The given values are:

Length of ladder,

$\tau_{242N} = 9.83 \ m$

then,

$\tau=4.92$

Mass,

= 20.3 kg

Now,

The net torque will be:

⇒ $\tau_{net}=\tau_{mg}+\tau_{242}$

On putting the given values, we get

⇒ $=4.92\times (-mg)+9.83\times (+242)$

⇒ $=4.92\times (-21\times 9.8)+9.83\times 242$

⇒ =-1012.53+2378.86

⇒ $=1366.33 \ Nm$

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