1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arte-miy333 [17]
4 years ago
8

Your friend provides a solution to the following problem. Evaluate her solution. The problem: Jim (mass 50 kg) steps off a ledge

that is 2.0 m above a platform that sits on top of a relaxed spring of force constant 8000 N/m. How far will the spring compress while stopping Jim? Your friend's solution: (50kg)(9.8m/s2)(2.0m)=(1/2)(8000N/m)x x=0.25m
Physics
2 answers:
valentinak56 [21]4 years ago
6 0

Answer:

The compress of the spring is 0.495.

Explanation:

Given that,

Mass = 50 kg

Spring constant = 8000 N/m

height = 2.0 m

We need to calculate the compress of the spring

Using law of conservation of energy

mgh=\dfrac{1}{2}kx^2

Where, m = mass

g = acceleration due to gravity

h = height

k = spring constant

x = distance

Put the value into the formula

50\times9.8\times2.0=\dfrac{1}{2}\times8000\times x^2

x=\sqrt{\dfrac{2\times50\times9.8\times2.0}{8000}}

x=0.495\ m

Hence, The compress of the spring is 0.495.

viktelen [127]4 years ago
3 0

Answer:

\Delta x=61.25\ mm

Explanation:

Given:

  • height of the ledge placed on a spring, h=2\ m
  • stiffness of the spring, k=8000\ N.m^{-1}
  • mass of the body placed over the ledge, m=50\ kg

<u>Now the load on the spring due to body weight:</u>

w=m.g

w=50\times 9.8

w=490\ N

As we know:

F=k.\Delta x

where F is the force of compression

\Delta x=\frac{w}{k}

\Delta x=\frac{490}{8000}

\Delta x=0.06125\ m

\Delta x=61.25\ mm

You might be interested in
Scientific hypotheses, theories, and laws are all vital to the development of scientific ideas. They are all vital, but they are
Sati [7]
A is correct......

please vote my answer brainliest. thanks!
7 0
4 years ago
Read 2 more answers
Approximately how far is the sun from the center of the milky way galaxy?
enot [183]
The sun is approximately 27,000 light years away from the center of our galaxy.
8 0
3 years ago
Read 2 more answers
Whats the word for when "velocity equals 0 and direction changes" Its 14 letters, and I have _ _ _ _ i _ _ _ _ _ h_ i _ _ t
alisha [4.7K]

Answer:

Maximum Height

Explanation:

The maximum height is the highest point reached by a projected body. At this point, final velocity, v of the body is equal to 0; because upward motion is at its peak and the body start to fall again.

Hence, final velocity v is always 0 at this maximum point and the direction of motion changes from upward to downward.

Final velocity at this maximum height is zero because of the directional change experied by the object and the fact that upward motion of the body terminates at this point.

6 0
3 years ago
What mass of ice (in g) can be melted if 27.2 kJ of thermal energy are added at the freezing point? Use molar mass = 18.02 g/mol
san4es73 [151]

Answer : The mass of ice melted can be, 3.98 grams.

Explanation :

First we have to calculate the moles of ice.

Q=\frac{\Delta H}{n}

where,

Q = energy absorbed = 27.2 kJ

\Delta H = enthalpy of fusion of ice = 6.01 kJ/mol

n = moles = ?

Now put all the given values in the above expression, we get:

27.2kJ=\frac{6.01kJ/mol}{n}

n=0.221mol

Now we have to calculate the mass of ice.

\text{Mass of ice}=\text{Moles of ice}\times \text{Molar mass of ice}

Molar mass of ice = 18.02 g/mol

\text{Mass of ice}=0.221mol\times 18.02g/mol=3.98g

Thus, the mass of ice melted can be, 3.98 grams.

3 0
4 years ago
5.) How could we have improved this activity to be more precise?<br><br>ball on ramp ​​
AleksAgata [21]

Explanation:

I don't understand this question

could you please explain

7 0
3 years ago
Other questions:
  • Metals are usually more dense than wood. Pick the statement below which accurately compares metals to wood. Metals have less mas
    11·1 answer
  • The frequency of a wave is 200 Hz. The wavelength is 0.1 m. What is the period of the wave?
    13·1 answer
  • A 40 lb box is suspended from two ropes which each make an angle of 45 degrees with the vertical. What is the tension (in pounds
    13·1 answer
  • The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of 2.00
    13·1 answer
  • What characteristic of carbon (c) makes it essential to living organisms
    14·1 answer
  • Children slide down a friction-less water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at p
    11·1 answer
  • How many seasons are there in a year
    8·2 answers
  • The principle of horizontality is based on the observation that sediment usually accumulates in layers. How will you describe th
    13·1 answer
  • Is it possible to hold friendships outside of your designated group Why or Why not?
    5·1 answer
  • 25. How long does it take a child on a swing to complete one swing if her center of gravity is 4.00 m below the pivot?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!