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3 years ago

A stick of mass m and length / is pivoted at one

Physics

1 answer:

AfilCa [17]3 years ago

5 0

Answer:

Potential Energy = mgl (1 - cosθ)

Explanation:

<h3>Given :-</h3>

Mass of stick = m
Length of stick = l
Angle = θ

Increase potential energy

<h3>Solution :-</h3>

✪ <u>According to the given </u><u>data</u> :-

⠀⠀⠀→ cosθ = ᵇ/ₕ

⠀⠀⠀→ cosθ = ᴬᴮ/l

⠀⠀⠀→ AB = l cosθ

❂ <u>For </u><u>Height</u> :-

⠀⠀⠀→ h = l - l cosθ

⠀⠀⠀→ h = l (1-cosθ)

☯ <u>As we know that</u>

⠀⠀⠀→ Potential Energy = mgh

⠀⠀⠀→ Potential Energy = mg × l (1-cosθ)

⠀⠀⠀→ Potential Energy = mgl (1-cosθ)

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A truck with 0.410 m radius tires travels at 25.0 m/s. What is the angular velocity of the rotating tires in radians per second?

Eduardwww [97]

relation between linear velocity and angular velocity is given as

$v = R\omega$

here

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3 years ago

sara and tory are out fishing on the lake on a hot summer day when they both decide to go for a swim. sara dives off the front o

crimeas [40]

Here it is an application of Newton's III law

as we know by Newton's III law that every action has equal and opposite reaction

So here as we know that two boys jumps off the boat with different forces

from front side of the boat the boy jumps off with force 45 N which means as per Newton's III law if boy has a force of 45 N in forward direction then he must apply a reaction force on the boat in reverse direction of same magnitude

So boat must have an opposite force on front end with magnitude 45 N

Now similar way we can say

from back side of the boat the boy jumps off with force 60 N which means as per Newton's III law if boy has a force of 60 N in backward direction then he must apply a reaction force on the boat in reverse direction of same magnitude

So boat must have an opposite force on front end with magnitude 60 N

So here net force due to both jump on the boat is given by

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