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
AVprozaik [17]
3 years ago
6

A block of mass 0.260 kg is placed on top of a light, vertical spring of force constant 5 200 N/m and pushed downward so that th

e spring is compressed by 0.090 m. After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise
Physics
1 answer:
abruzzese [7]3 years ago
4 0

After being released, the restoring force exerted by the spring performs

1/2 (5200 N/m) (0.090 m)² = 12.06 J

of work on the block. At the same time, the block's weight performs

- (0.260 kg) <em>g</em> (0.090 m) ≈ -0.229 J

of work. Then the total work done on the block is about

<em>W</em> ≈ 11.83 J

The block accelerates to a speed <em>v</em> such that, by the work-energy theorem,

<em>W</em> = ∆<em>K</em>   ==>   11.83 J = 1/2 (0.260 kg) <em>v</em> ²   ==>   <em>v</em> ≈ 9.54 m/s

Past the equilibrium point, the spring no longer exerts a force on the block, and the only force acting on it is due to its weight, hence it has a downward acceleration of magnitude <em>g</em>. At its highest point, the block has zero velocity, so that

0² - <em>v</em> ² = -2<em>gy</em>

where <em>y</em> is the maximum height. Solving for <em>y</em> gives

<em>y</em> = <em>v</em> ²/(2<em>g</em>) ≈ 4.64 m

You might be interested in
Which formula can be used to find the angle of the resultant vector has
nata0808 [166]
The diagram shows components that have been added together to form Rx and Ry. Rx and Ry are the components of the resultant vector.
Which formula can be used to find the angle of the resultant vector?
the answer is C
C.  tan0= Ry/Rx
5 0
2 years ago
I need help please hurry ??!!!
jok3333 [9.3K]

Answer:

I would use the model of Ammonia because it helps you visualize the structure of NH3 better than the description. It would be easier to understand the structure of it if you can see it, rather than reading its description.

3 0
2 years ago
How to find the density of air?
nikitadnepr [17]
You have to divide the pressure exerted by the air into two partial pressures: of the dry air and of the water vapor. Combining these two values gives you the parameter.
8 0
2 years ago
A e limb of mass 12kg falls straight down. If air resistance exerts 27 N of froce on the limb as it falls, what is the net force
Gelneren [198K]
During the falling down, two forces are present: gravitational force and air resistance.

So, the net force = mg - f = 12*9.8 - 27 = 90.6 N, the positive sign indicates the direction is pointing towards the center of the earth, which is the same as gravitational force
6 0
2 years ago
A 1500 kg car drives around a flat 200-m-diameter circular track at 25m/s. What are the magnitude and direction of the net force
MakcuM [25]

The correct answer to the question is : 9375 N.

CALCULATION:

As per the question, the mass of the car  m = 1500 Kg.

The diametre of the circular track D = 200 m.

Hence, the radius of the circular path R = \frac{D}{2}

                                                                  = \frac{200}{2}\ m

                                                                  = 100 m.

The velocity of the truck v = 25 m/s.

When a body moves in a circular path, the body needs a centripetal force which helps the body stick to the orbit. It acts along the radius and towards the centre.

Hence, the force acting on the car is centripetal force.

The magnitude of the centripetal force is calculated as -

                              Force F = \frac{mv^2}{R}

                                            =  \frac{1500\times (25)^2}{100}\ N

                                            = 9375 N.           [ANS}        

The centripetal force is provided to the car in two ways. It is the friction which provides the necessary centripetal force. Sometimes friction is not sufficient. At that time, the road is banked to some extent which provides the necessary centripetal force.


6 0
2 years ago
Other questions:
  • The term wavelength refers to which of the following?
    10·1 answer
  • With what initial velocity must an object be thrown upward from a height of 2 meters to reach a maximum hieght of 200 meters
    10·1 answer
  • 11) A sled is initially given a shove up a frictionless 35º incline. It reaches a maximum height of 2.5
    6·1 answer
  • A bullet is fired with a velocity of 100 m/s from the ground at an angle of 60° with the horizontal. Calculate the horizontal ra
    13·1 answer
  • A negative ion of charge -2e is located at the origin and a second negative ion of charge -3e is located nearby at x = 3.8 nm ,
    8·1 answer
  • A tornado passes in front of a building, causing the pressure to drop there by 25% in 1 second. Part A If a door on the side of
    8·1 answer
  • What causes the pressure that allows diamonds to form in the mantle?
    14·1 answer
  • Why did boy (the observer) hear the pitch of the sound change? What does this tell us about the frequency of the sound? Support
    10·1 answer
  • Testing shows that a sample of wood from an artifact contains 12.5% of the original amount of carbon-14. Given that the half-lif
    14·2 answers
  • Two metal disks are welded together and are mounted on a frictionless axis through their common centers. One disk has a radius R
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!