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3 years ago

what output force is generated when an input force of 630 n is applied to a machine with a mechanical advantage of 3

Physics

2 answers:

Natali5045456 [20]3 years ago

8 0

Answer : Output force is 1890 N.

Explanation :

Given that,

Input force is 630 N

Mechanical advantage is 3

Mechanical advantage of a machine is defined as the ratio of output force and the input force.

Mathematically it can be written as :

$m=\dfrac{F_o}{F_i}$

Where,

$F_o$ is the output force

$F_i$ is the input force

So, $3=\dfrac{F_o}{630\ N}$

$F_o=1890\ N$

Hence, this is the required solution.

Marta_Voda [28]3 years ago

3 0

The mechanical advantage is the factor by which
the machine multiplies the input force.

If the MA is 3 and the input force is 630N, then
the output force is

(3) x (630N) = 1,890N

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Answer:

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Explanation:

a) The amount of heat needed to warm water is given by the following expression:

$Q_{needed} = m_{w}\cdot c_{w}\cdot (T_{f}-T_{i})$

Where:

$m_{w}$ - Mass of water, measured in kilograms.

$c_{w}$ - Specific heat of water, measured in $\frac{J}{kg\cdot ^{\circ}C}$ .

$T_{f}$ , $T_{i}$ - Initial and final temperatures, measured in $^{\circ}C$ .

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$Q_{needed} = (1440\,kg)\cdot \left(4184\,\frac{J}{kg\cdot ^{\circ}C} \right)\cdot (40^{\circ}C - 10^{\circ}C)$

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The energy needed in kilowatt-hours is:

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The electric energy required to heat up the water is:

$E = \frac{50.208\,kWh}{0.75}$

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$E = (66.944\,kWh)\cdot \left(0.09\,\frac{USD}{kWh} \right)$

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3 years ago

A 0.454-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 21.0 N/m. The

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Answer:

a. Δx = 2.59 cm

Explanation:

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vf = ( mp / mp + mb) * vp

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Δx = √ ( ( 5.9 x 10⁻² kg ) ² * (8.97 m /s) ² / [ 21.0 N / m * ( 5.9 x10 ⁻² kg + 0.454 kg ) ]

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Kinetic energy is defined as the amount of work necessary to accelerate a body of a given mass and in a rest position, until it reaches a given speed. Once this point is reached, the amount of accumulated kinetic energy will remain the same unless there is a change in speed or the body returns to its rest state by applying a force to it.

The kinetic energy is represented by the following expression:

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