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
Arisa [49]
2 years ago
15

A spring is laid horizontally on a table and a force of 62 N is required to stretch the spring 12 cm. The spring is then held ve

rtically and an object is attached to the end of it which causes the spring to stretch 9.7 cm. What is the Mass of the object?
SHOW YOUR WORK
Physics
1 answer:
Talja [164]2 years ago
8 0

Answer:

5.11 kg

Explanation:

Hooke's law states that stress is directly proportional to strain. It can be represented by the equation:

F = -kx

Where x is the displacement of the spring’s end from its equilibrium position, F is the force applied to the spring, k is a constant known as spring constant.

At first a force (F) of 62 N i used to stretch a spring by 12 cm (x).

Substituting into Hooke's equation:

F = kx

k = F/x = 62 / 12 = 5.17 N/cm

The spring is then held vertically and an object. The object is acted by upon by acceleration due to gravity since it is vertically upward. Therefore the force created by the object F = mg where g = acceleration due to gravity = 9.8 m/s². It causes a stretch (x) of 9.7 cm

Therefore:

mg =  5.17 N/cm × 9.7 cm

9.81m = 50.117

m = 50.117 / 9.81 = 5.11 kg

You might be interested in
PLS HELP!!! A 1200-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationa
Fittoniya [83]

Answer:

7200 kg.m/s

Explanation:

According the law of conservation of linear momentum, the sum of momentum before and after collision are equal.

Using this principle, the sum of initial momentum will be given as p=mv where p is momentum, m is mass and v is velocity

Initial momentum

Mass of whale*initial velocity of whale + mass of seal*initial seal velocity

Since the seal is initially stationary, its velocity is zero. By substitution and taking right direction as positive

Initial momentum will be

1200*6+(280*0)=7200 kg.m/s

Since both initial and final momentum should be equal, hence the final momentum will also be 7200 kg.m/s

7 0
3 years ago
How do the Sun, Earth, and Moon systems interact
Nataly [62]

The sun is the mother star of the solar system, which only emits light to half of the planet, while the other part is always dark.

The sun emits light towards the earth, which dominates all life on earth. The movements of the Moon around the Earth and of the Earth around the Sun are complex. Movements of rotation around their own axes are superimposed on movements of orbital translation. The Earth and the Moon rotate around their own axes: This is rotation.

8 0
1 year ago
How much power is needed to lift the 200-N object to a height of 10 m in 4 s?
harkovskaia [24]

Answer:

500 watts

Explanation:

Recall that the definition of power is the amount of energy delivered per unit of time.

In our case, the energy delivered is potential energy which we can estimate as the product of the weight of the object times the distance it is lifted above ground:

200 N x 10 m = 2000  Nm

then the power is the quotient of this potential energy divided the time it took to lift the object to that position:

Power = 2000 / 4   Nm/s = 500 Nm/s = 500 watts

6 0
2 years ago
Which has more inertia a shopping cart full or groceries or an empty shopping cart?
morpeh [17]
I think that  the shopping cart full of groceries has more inertia because it is the one with more tendency to do nothing or be still.
5 0
3 years ago
Paki po plss po plssssss​
slega [8]

Answer:A language is a structured system of communication. Language, in a broader sense, is the method of communication that involves the use of – particularly human – languages. The scientific study of language is called linguistics

Explanation:

7 0
3 years ago
Other questions:
  • Basidiomycete fungi ballistically eject millions of spores into the air by releasing the surface tension energy of a water dropl
    5·1 answer
  • an input force of 20 newtons is applied to a lever at a distance of 2 meters from the fulcrum and object 0.5 M away from the ful
    12·1 answer
  • Divergent boundaries are also called
    6·2 answers
  • Explain why friction makes it harder to push a box filled with groceries than an empty box
    9·1 answer
  • Give me an atom with the following characteristics.
    10·1 answer
  • Which of the following is the water cycle process where the extra water that plants release is evaporated from their leaves?
    9·1 answer
  • Write a short note on convection of heat<br><br>I will give brainlist ​
    12·1 answer
  • Pls help Which one of the following is NOT acceleration
    7·2 answers
  • your stopped at a red light. You've checked the intersection to see that it is clear of vehicles and pedestrians, unless a tells
    7·1 answer
  • What is one of the principles of charges in a conductor?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!