1 year ago

3. What is mechanical advantages and velocity ratio of a machine?

1 answer:

5 0

Mechanical advantage is the ratio of load to effort of machine or we can say it is the ratio of output of machine to the input of the machine. Velocity ratio is also defined as velocity of

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The acceleration of one of those bugs is equal to 305mi/s.

<h3>Acceleration calculation</h3>

To calculate the insect's acceleration, the action and reaction force of the impact must be considered.

As the insect will hit the helmet, the force it hits is the same force it receives, so we can make the following expression:

$m_m \times a_m = m_b \times a_b$

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So, the acceleration of one of those bugs is equal to 305mi/s.

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A 398-kg boat is sailing 14.0° north of east at a speed of 1.50 m/s. 23.0 s later, it is sailing 33.0° north of east at a speed

kicyunya [14]

Answer:

Explanation:

We shall represent speed in vector form

First speed

v₁ = 1.5 cos 14 i + 1.5 sin 14 j

= 1.455 i + 0.363 j

v₂ = 4.4 cos 33 i + 4.4 sin 33 j

= 3.69 i + 2.39 j

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3.69 i + 2.39 j - 1.455 i - 0.363 j

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acceleration

= v₂ - v₁ / time

= ( 2.235 i + 2.027 j ) / 23

= .097 i + .088 j

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= 398 x ( .097 i + .088 j )

= 38.6 i + 35.02 j

Magnitude of force F

F² = 38.6² + 35.02²

F = 52.11 N

Tan θ = 35.02 / 38.6

θ = 42° north of east.

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2 years ago