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Gwar [14]
3 years ago
7

A spring stretches 0.2 cm per newton of applied force. An object is suspended from the spring and a deflection of 3 cm is observ

ed. If g = 9.81 m/s?, what is the mass of the object, in kg?
Physics
1 answer:
siniylev [52]3 years ago
7 0

Answer:

m=1.53kg    

Explanation:

To solve this problem we use the Hooke's Law:

F=k*\Delta x     (1)

F is the Force needed to expand or compress the spring by a distance Δx.

The spring stretches 0.2cm per Newton, in other words:

1N=k*0.2cm ⇒ k=1N/0.2cm=5N/cm  

The force applied is due to the weight

F=mg

We replace in (1):

mg=k*\Delta x  

We solve the equation for m:

m=k*\Delta x/g=5*3/9.81=1.53kg    

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As we know that fulcrum is shifted to one side by 1.33 cm

so here let say left side mass is m1 while on other side mass is m2

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m_2 = 0.895 m_1

now in order to find the percentage we have

percentage = \frac{m_1 - m_2}{m_1}\times 100

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percentage = 10.5%

so it is 10.5 % less mass

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2 years ago
What is a gravitational force...??
o-na [289]
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5 0
3 years ago
In the design of wall and column forms, the two most important factors are which of the following? a. rate of placement of the c
Simora [160]

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c. length of the wall or column and the rate of placement of the concrete

Explanation:

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Concrete placement has methods and precaution to be taken when doing the  form work

if the concrete placement is manually (hand or funnel) the form work height should not be more than 1 m to enable easy compaction and vibration of concrete in the form.

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Pls help<br> What graph indicates no reference to direction of motion, and explain why.
Komok [63]

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graph A

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Consider the f(x) = cos(x-C) function shown in the figure in blue color, where 0 ≤ C ≤ 2π. What is the value of parameter C for
klemol [59]

The value of parameter C for the function in the figure is 2.

<h3>What is amplitude of a wave?</h3>

The amplitude of a wave is the maximum displacement of the wave. It can also be described at the maximum upward displacement of a wave curve.

f(x) = Acos(x - C)

where;

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<h3>What is angular frequency of a wave?</h3>

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From the blue colored graph; at y = 1, x = -2 cm

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Learn more about phase angle here: brainly.com/question/16222725

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1 year ago
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