Mike says, I gave up guitar because I’ll never be good at it, some people seem to have a good ear music, not me. Which mindset i
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Answer:
Explanation:
Let's use the conservation of angular momentum here. If there is a conservation the addition of both must be zero.
The momentum of inertia of both are:
The angular momentum is the product between angular velocity and momentum of inertia.
Let's solve it for ω(t).
But
- R is the radius R=D/2 = 30 cm = 0.3 m
- V is the steady speed V = 0.74 m/s
Knowing that 2π rad is a rev. We have.
The minus sign means the track is moving opposite of the car.
I hope it helps you!
The correct answer to the question is unitless i.e the IMA of a mechanical system has no unit.
EXPLANATION:
The IMA of a mechanical system stands for ideal mechanical advantage. It can be defined as the number of times the input or effort force provided to the mechanical system is multiplied under ideal conditions. The ideal conditions means that the system is free from friction, air resistance etc.
Let us consider is the distance over which the input force is applied.
Let is the distance over which the output force is applied.
The ideal mechanical advantage of the system is calculated as -
IMA = .
Both are measured in distance unit.
Hence, IMA is a unitless physical quantity.