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Bumek [7]
3 years ago
9

What is the radius of a bobsled turn banked at 75.0^\circ75.0 ​∘ ​​ and taken at 30.0 m/s, assuming it is ideally banked?

Physics
1 answer:
Contact [7]3 years ago
4 0

Banking angle is the angle between the normal horizontal path (N) and the curved banked path. The angle of banking of a curved path is defined as the angle through which the outer edge of the road is raised over the inner edge.

It is calculated as:

tan\theta = \frac{v^2}{rg}

Here,

v = Linear velocity of object

r = Radius of the curved path

a_c = Acceleration due to gravity

Rewriting the equation to solve for the radius we have that

r=\frac{v^2}{gtan\theta}

r = \frac{30}{(9.8)(tan 75\°)}

r = 24.6m

Therefore the radius of a bobsled turn banked at 75° taken at 30m/s is 24.6m

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Answer with Explanation:

We are given that

Mass of spring,m=3 kg

Distance moved by object,d=0.6 m

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Height,h=1.5 m

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b.

By conservation law of energy

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v^2=\frac{37.8\times 2}{3}

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3 years ago
A 4.3-kg block slides down an inclined plane that makes an angle of 30° with the horizontal. Starting from rest, the block slide
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Answer:

0.56

Explanation:

Let the coefficient of friction is μ.

m = 4.3 kg, θ = 30 degree, initial velocity, u = 0, s = 2.7 m, t = 5.8 s

By the free body diagram,

Normal reaction, N = mg Cosθ = 4.3 x 9.8 x Cos 30 = 36.49 N

Friction force, f = μ N = 36.49 μ

Net force acting on the block,

Fnet = mg Sinθ - f = 4.3 x 9.8 x Sin 30 - 36.49 μ

Fnet = 21.07 - 36.49μ

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a = (21.07 - 36.49μ) / 4.3

use second equation of motion

s = ut + 1/2 a t^2

2.7 = 0 + 1/2 x (21.07 - 36.49μ) x 5.8 x 5.8 / 4.3

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μ = 0.56

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3 years ago
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D. Your mass and the mass of the planet

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Answer: The current flowing through the circuit is 0.01A (or 10 mA)

Explanation:

Use Ohm's Law:

I=\frac{U}{R}

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Visible light is in turn composed of seven different wavelengths of which green light is one of them. Hence, green light travels by electromagetic wave.

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