In electronics, the SI unit for current is Ampere. It is the amount of charge in Coulombs per unit time. It is named after the father of electrodynamics, Andre-Marie Ampere. Also, the current can be easily determined through the Ohm's Law, which states that current is equal to volts divided by the resistance. The answer is letter D.
Answer:2.55 rad/s
Explanation:
Given
Diameter of ride=5 m
radius(r)=2.5 m
Static friction coefficient range=0.60-1
Here Frictional force will balance weight
And limiting frictional force is provided by Centripetal force
![f=\mu N=\mu m\omega ^2\cdot r](https://tex.z-dn.net/?f=f%3D%5Cmu%20N%3D%5Cmu%20m%5Comega%20%5E2%5Ccdot%20r)
weight of object=mg
Equating two
f=mg
![\mu m\omega ^2\cdot r=mg](https://tex.z-dn.net/?f=%5Cmu%20m%5Comega%20%5E2%5Ccdot%20r%3Dmg)
![\omega ^2=\frac{g}{\mu r}](https://tex.z-dn.net/?f=%5Comega%20%5E2%3D%5Cfrac%7Bg%7D%7B%5Cmu%20r%7D)
![\omega =\sqrt{\frac{g}{\mu r}}](https://tex.z-dn.net/?f=%5Comega%20%3D%5Csqrt%7B%5Cfrac%7Bg%7D%7B%5Cmu%20r%7D%7D)
![\omega =2.55 rad/sec](https://tex.z-dn.net/?f=%5Comega%20%3D2.55%20rad%2Fsec)
The SI unit of time is second