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Alenkasestr [34]
2 years ago
5

Calculation on simple pendulum

Physics
1 answer:
kiruha [24]2 years ago
4 0

Answer:State the question so I can answer

Explanation:

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Answer

given,

mass of ball = 5.93 kg

length of the string = 2.35 m

revolve with velocity of 4.75 m/s

acceleration due to gravity = 9.81 m/s²

T cos θ = mg

T cos θ = 5.93\times 9.81

T cos θ = 58.17

T sin \theta =\dfrac{mv^2}{r}

T sin \theta =\dfrac{5.93\times 4.75^2}{2.35 sin \theta}

T sin^2 \theta =56.93

sin^2 \theta = 1 - cos^2 \theta

T (1 - cos^2 \theta) =56.93

T (1 - (\dfrac{58.17}{T})^2) =56.93

T² - 56.93T - 3383.75 = 0

T =  93.22 N

cos \theta = \dfrac{58.17}{93.22}

θ = 51.39°

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3 years ago
Kathy 82 kg performer standing on a diving board at the carnival dive straight down into a small pool of water. Just before stri
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Solution :

Given weight of Kathy = 82 kg

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Her speed after entering the water, $V_f$= 1.1 m/s

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$dP = F \times  dT$

Here, F =  the force ,

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       dP  = change in momentum

dP = m x dV

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    = 82 x (1.1 - 5.5)

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$F=\frac{dP}{dT}$

$F=\frac{-360}{1.65}$

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3 years ago
A small rock is thrown vertically upward with a speed of 21.0 m/sm/s from the edge of the roof of a 21.0-mm-tall building. The r
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Answer:

Explanation:

A.

Given:

Vo = 21 m/s

Vf = 0 m/s

Using equation of Motion,

Vf^2 = Vo^2 - 2aS

S = (21^2)/2 × 9.8

= 22.5 m.

B.

Given:

S = 22.5 + 21 mm

= 22.521 m

Vo = 0 m/s

Using the equation of motion,

S = Vo × t + 1/2 × a × t^2

22.521 = 0 + 1/2 × 9.8 × t^2

t^2 = (2 × 22.521)/9.8

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Im pretty sure false but not 100% :) 
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B) using a blood pressure monitor to find a patient's blood pressure.

Hope this helped!
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