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iogann1982 [59]
3 years ago
6

Ejercicio 1: Un cuerpo gira en un círculo de 8cm de diámetro con una rapidez constante

Physics
1 answer:
Lera25 [3.4K]3 years ago
8 0

Answer:

Exercise 1;

The centripetal acceleration is approximately 94.52 m/s²

Explanation:

1) The given parameters are;

The diameter of the circle = 8 cm = 0.08 m

The radius of the circle = Diameter/2 = 0.08/2 = 0.04 m

The speed of motion = 7 km/h = 1.944444 m/s

The centripetal acceleration = v²/r = 1.944444²/0.04 ≈ 94.52 m/s²

The centripetal acceleration ≈ 94.52 m/s²

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When a car maintains a velocity of exactly 65 mph, it's acceleration​ is zero.

<h3>What is acceleration?</h3>

The acceleration is time rate of change of velocity.

When the velocity is not changing with respect to time, it is said to be an object moving with constant velocity.

At constant velocity, there is no acceleration.

Thus, when a car maintains a velocity of exactly 65 mph, it's acceleration​ is zero.

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Explanation:

The resistance of a wire is given by :

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If length and the area of cross section of the wire is doubled then new length is l' and A', l' = 2 l and A' = 2 A

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The speed with which runner is running is 7.07m/s

<u>Explanation:</u>

Given:

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On substituting the value we get,

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