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Serhud [2]
3 years ago
6

Some people say that the “force of inertia” (and “force of momentum”) throws the passengers forward when a car brakes sharply. w

hat is wrong with this explanation
Physics
1 answer:
marishachu [46]3 years ago
5 0

the car stops, the inertia of people keeps them going. no force ... they were going before the car stopped

sudden stop = pain

gentle stop = ok

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The moment of inertia for a 5500 kg solid disc is 12100 kg-m^2. Find the radius of the disc? (a) 2.111 m (b) 2.579 m (c) 1.679
Soloha48 [4]

Answer:

The radius of the disc is 2.098 m.

(e) is correct option.

Explanation:

Given that,

Moment of inertia I = 12100 kg-m²

Mass of disc m = 5500 kg

Moment of inertia :

The moment of inertia is equal to the product of the mass and square of the radius.

The moment of inertia of the disc is given by

I=\dfrac{mr^2}{2}

Where, m = mass of disc

r = radius of the disc

Put the value into the formula

12100=\dfrac{5500\times r^2}{2}

r=\sqrt{\dfrac{12100\times2}{5500}}

r= 2.098\ m

Hence, The radius of the disc is 2.098 m.

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