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Tomtit [17]
3 years ago
12

A compact car has a mass of 1300 kg . When empty, the car bounces up and down on its springs 1.5 times per second. What is the c

ar's oscillation frequency while carrying four 78 kg passengers?
Physics
1 answer:
Snezhnost [94]3 years ago
7 0

Answer:

0.76 oscillations per second

Explanation:

Time period = 2\pi \sqrt{m/k} where k is the spring constant and m is the mass attached to the spring.

Calculating the spring constant:

1/1.5=2\pi\sqrt{1300/k};

k=3.68*10^4

When the car is loaded, its mass increases to 1300+ 4*78 = 1612

Calculating the new time period:

T=2\pi \sqrt{1612/36800}=1.1315s

Frequency=1/T;

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xxMikexx [17]

Answer: The bug will remain motionless

Explanation:

According to Newton's first Law of Motion (sometimes called Law of Inertia):

<em>An object at rest or describing a uniform straight line motion (moving at constant velocity), will remain at rest or moving unless an external force is applied to it and changes its state of rest or motion. </em>

In other words:

An object or body will keep its state of motion until an external force changes its state

This means that objects tend to remain in its state of motion, and is the definition of the inertia, as well.

In addition, according to his law, an object in rest can be in equilibrium (net force equals to zero), and a moving object can also be in equilibrium, as long as it keeps a constant velocity.

<h2>This is why the bug, which is at rest will remain at rest, although the ants are simultaneously pulling it in different directions, since the resultant of all these forces is zero.</h2>
4 0
3 years ago
20.
sveticcg [70]

Answer:

I believe the answer is A and D.

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ahrayia [7]

Answer:

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4 0
3 years ago
imagine riding a single-speed bicycle. why do you have to push harders on the pedals to start the bicycle moving than to keep it
Flura [38]
A large force is required to accelerate the mass of the bicycle and rider. Once the desired constant velocity is reached, a much smaller force is sufficient to overcome the ever-present frictional forces. 
3 0
3 years ago
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mr_godi [17]

Answer:

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Explanation:

The relation between the wavelength in a particular medium and refractive index \lambda_n = \frac{ \lambda }{n}

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For one phase change :

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