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Brums [2.3K]
3 years ago
8

A spring 1.7 m long with force constant 550 N/m is hung from the ceiling of an elevator, and a block of mass 15 kg is attached t

o the bottom of the spring. (a) By how much is the spring stretched when the block is slowly lowered to its equilibrium point
Physics
1 answer:
Nastasia [14]3 years ago
3 0

Answer:

27 cm

Explanation:

ASSUMING the elevator is in a constant velocity state (could be zero)

mg = kx

x = mg/k = 15(9.8)/550 = 0.267272... m ≈ 27 cm

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You were in a tog-o-war contest which your team won. Write a letter to your friend that tells why your team won the contest. Rem
ollegr [7]

Answer:

Imagine a tug-of-war between you and one

friend. If you are stronger, you apply more

force to the rope. You pull your friend across

the line, and you are the winner! If your friend

is stronger, he might pull you across the line.

Sometimes the forces are equal. Neither you

nor your friend moves across the line. The two

forces are balanced.

3

We say that the net force on an object is the combination of all the forces acting on it. To find the net force of

forces that are acting in the same direction, add them together. For example, if you pull on a box with a force of 25

newtons (N) while your friend pushes the box (in the same direction you are pulling) with a force of 30 N, the net

force applied to the box in that direction is 55 newtons.

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To find the net force of forces that are acting in opposite directions, subtract the smaller force from the larger

one. If you are pulling on a tug-of-war rope with a force of 40 N, and your friend is pulling with a force of 35 N in

the opposite direction, the net force on the rope is 5 newtons in your direction. You win!

Explanation:

3 0
3 years ago
At which point does the planet have the least gravitational force acting on it?
Elza [17]

Answer:

At which point does the planet have the least gravitational force acting on it?

Explanation:

In an elliptical orbit, when a planet is at its furthest point from the Sun, it is under the least amount of gravity, meaning that the force of gravity is strongest when it is closest.

5 0
3 years ago
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If we decrease the distance an object moves we will
emmasim [6.3K]
... without changing the speed of the object, then
we will not have to wait so long for the object to get
where it is going.
6 0
3 years ago
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Q|C Review. A particle of mass 4.00kg is attached to a spring with a force constant of 100 N/m . It is oscillating on a friction
Nezavi [6.7K]

The change in energy after the collision is <u>0.5</u>

<u />

<h3>What is change in energy?</h3>

This refers to the difference in the energy where energy is the capacity to do work.  There different forms of energy they include mechanical energy, solar energy, electrical energy and so on.

The energy described in the problem is mechanical energy and it is of two types kinetic energy and potential energy

<h3>solving for the change in energy as a result of the collision</h3>

where mass of particle mp = 4 kg

mass of object mb = 6 kg

force constant of spring k = 100 N/m

amplitude A = 2 m

kinetic energy = 1/2 mv^2

initial velocity u = Aω

ω = sqrt ( 100/ 4 )

u = 2 sqrt ( 100/ 4 )

u = 10m/s

final velocity v = 5 m/s

change in energy

= - 0.5 * ( 4 + 4 ) * 5^2 + 0.5 * 4 * 10^2 ) / 0.5 * 4 * 10^2

= 0.5

Read more on change in energy here: brainly.com/question/26066414

#SPJ4

8 0
2 years ago
Why does a pencil in a glass container filled with water appear to be bent?
Bogdan [553]

The phenomenon is called "refraction".  It's the process of
light waves bending toward a different direction when they
cross a boundary between different media ... in this case,
from water into air.

Your brain doesn't know that the light waves bent toward a
new direction when they came out of the water into the air,
so your brain locates the bottom half of the pencil just like it
ALWAYS does ... in the direction the light waves are coming FROM.

4 0
4 years ago
Read 2 more answers
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