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NeTakaya
3 years ago
10

A 10-meter long ramp has a mechanical advantage of 5. What is the height of the ramp?

Physics
1 answer:
denpristay [2]3 years ago
6 0
<span><span>1.       </span>If the ramp has a length of 10 and has a mechanical advantage (MA) of 5. Then we need to find the height of the ramp.
Formula:
MA = L / H
Since we already have the mechanical advantage and length, this time we need to find the height .
MA 5 = 10 / h
h = 10 / 5
h = 2 meters

Therefore, the ramp has a length of 10 meters, a height of 2 meters with a mechanical advantage of 5.</span>



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Answer:

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Explanation:

Please look at attachment for step by step solution and guide.

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A bullet of mass 6.00 g is fired horizontally into a wooden block of mass 1.12 kg resting on a horizontal surface. The coefficie
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Answer:

vo = 227 m/s

Explanation:

Let's analyze the problem, we have two parts one during the crash for which we will use the moment and another when it slides where we will use the energy. As we give the data of the latter let's start here

Before starting let's reduce the unit to the SI system

    m = 6.00 g (1kg / 1000g) = 6.00 10⁻³ kg

    M = 1.12 kg

We write the energy at two points, one initial right after the crash and another when the body has stopped

Just after shock

The bodies are united, so the mass is the sum of the mass of the bullet and the block

    Em₀ = K = ½ (m + M) v²

When the body has stopped

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When in the system there is friction force the variation the mechanical energy is equal to the work of the friction force. Notice that the force of friction opposes the movement so that their work is negative

    W fr = ΔEm = Em_{f} -Em₀

    -fr d = 0 - ½ (m + M) v²

To find the force of friction let's use Newton's second law

Axis y

    N-W = 0

    N = W = (m + M) g

The equation for the force of friction is

    fr = μ N

    fr = μ (m + M) g

Let's replace in the work and energy equation

    -μ (m + M) g d = 0 - ½ (m + M) v²

From here we can find the system speed. Let's calculate

    v³ = 2 μ g d

    v = √ (2μ gd)

    v = √ (2 0.250 9.8 0.300)

    v = 1.21 m / s

Now let's solve the crash, let's look for the moment before and after it

Before the crash

    po = m vo

After the crash

    p_{f} = (m + M) v

The system is formed by the bullet and the block, therefore, the forces during the impact are internal and the amount of movement is conserved

    po = p_{f}

    m vo = (m + M) v

    vo = v (m + M) / m

    vo = 1.21 (0.00600 + 1.12) /0.00600

    vo = 227 m / s

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3 years ago
What is the final speed if the displacement is increased by a factor of 4?
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t is the time taken

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An experiment measures the growth of crystals in a liquid solution aboard the space shuttle. A collection of bottles has the liq
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Read 2 more answers
Particle A of charge 2.76 10-4 C is at the origin, particle B of charge -6.54 10-4 C is at (4.00 m, 0), and particle C of charge
Vanyuwa [196]

Answer:

a) F_net = 30.47 N ,   θ = 10.6º

b)  Fₓ = 29.95 N

Explanation:

For this exercise we use coulomb's law

          F₁₂ = k k \frac{ q_{1}  \  q_{2} }{ r^{2} }

the direction of the force is on the line between the two charges and the sense is repulsive if the charges are equal and attractive if the charges are different.

As we have several charges, the easiest way to solve the problem is to add the components of the force in each axis, see attached for a diagram of the forces

X axis

        Fₓ = F_{bc x}

Y axis  

       F_{y}Fy = F_{ab} - F_{bc y}

let's find the magnitude of each force

     F_{ab} = 9 10⁹ 2.76 10⁻⁴ 1.02 10⁻⁴ / 3²

      F_{ab} = 2.82 10¹ N

      F_{ab} = 28.2 N

   

      F_{bc} = 9 10⁹ 6.54 10⁻⁴ 1.02 10⁻⁴ / 4²

      F_{bc} = 3.75 10¹  N

       F_{bc} = 37.5 N

let's use trigonometry to decompose this force

      tan θ = y / x

      θ = tan⁻¹ and x

       θ= tan⁻¹ ¾

      θ = 37º

let's break down the force

      sin 37 = F_{bcy} / F_{bc}

      F_{bcy} = F_{bc} sin 37

      F_{bcy} = 37.5 sin 37

      F_{bcy} = 22.57 N

      cos 37 = F_{bcx} /F_{bc}

      F_{bcx} = F_{bc} cos 37

      F_{bcx} = 37.5 cos 37

      F_{bcx} = 29.95 N

let's do the sum to find the net force

X axis

        Fₓ = 29.95 N

Axis y

        Fy = 28.2 -22.57

        Fy = 5.63 N

we can give the result in two ways

a)  F_net = Fₓ i ^ + F_{y} j ^

    F_net = 29.95 i ^ + 5.63 j ^

b) in the form of module and angle

let's use the Pythagorean theorem

    F_net = \sqrt{ F_{x}^2 + F_{y}^2 }

    F_net = √(29.95² + 5.63²)

     F_net = 30.47 N

we use trigonometry for the direction

      tan θ= \frac{ F_{y}  }{  F_{x} }

       

      θ = tan⁻¹ \frac{ F_{y}  }{  F_{x} }

      θ = tan⁻¹ (5.63 / 29.95)

      θ = 10.6º

3 0
3 years ago
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