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
melamori03 [73]
2 years ago
7

I need an answer fast plz​

Physics
1 answer:
Zina [86]2 years ago
8 0

Answer:

L = 1.5 [m]

Explanation:

To find the Force Z we must perform a sum of forces on the Y-axis equal to zero, (it is equal to zero since there is no movement, the beam is in equilibrium).

ΣFy = 0

- 30 - 20 - 40 + Z = 0

Z = 90 [N]

Now to find the length of the beam, we must perform a sum of moments equal to zero at the midpoint of the beam, where the load Z is applied.it is important to clarify that the moment generated by the force of 30[N] tends to rotate the beam counterclockwise (is taken as positive), while the load of 20 [N], tends to rotate the beam Clockwise (is taken as negative).

ΣM = 0

+ (30*0.5) - (20*x) = 0

15 = 20*x

x = 15/20

x = 0.75 [m] (this is the half of the distance)

L = 2*x

L = 2*0.75

L = 1.5 [m]

You might be interested in
Answer pls will give 20 points per person
LuckyWell [14K]

Answer: question 1 is b I believe

Explanation:

every action has an opposite reaction

7 0
3 years ago
Read 2 more answers
How to convert acceleration to velocity.
Nana76 [90]

You can't. Velocity and acceleration measure two different things, so their units are incompatible. It's like asking, "How many meters does this book weigh?"

Maybe you mean "find" acceleration using given velocities, or a velocity function?

4 0
2 years ago
Why do people hate on people and hate country people. are you country
Dmitry_Shevchenko [17]

Answer:

why do people hate on people and hate country people. are you country

because they only think about. themselves and they also think that they are always right .

it's my point of view

hope it is helpful to you

3 0
3 years ago
Read 2 more answers
Which of the following graph is used for determining the instantaneous velocity from the slope?
hoa [83]

Answer:

B. x - t graph

Explanation:

A position-time (x-t) graph is a graph of the position of an object against (versus) time.

Generally, the slope of the line of a position-time (x-t) graph is typically used to determine or calculate the velocity of an object.

An instantaneous velocity can be defined as the rate of change in position of an object in motion for a short-specified interval of time. Thus, an instantaneous velocity is a quantity that can be found by measuring the slope of a line that is tangent to a point on the graph.

Hence, the x - t graph also referred to as the position-time graph is used for determining the instantaneous velocity from the slope.

<u>For example;</u>

Given that the equation of motion is S(t) = 4t² + 2t + 10. Find the instantaneous velocity at t = 5 seconds.

Solution.

S(t) = 4t^{2} + 2t + 10

Differentiating the equation, we have;

S(t) = 8t + 2

Substituting the value of "t" into the equation, we have;

S(5) = 8(5) + 2

S(5) = 40 + 2

S(5) = 42 m/s.

5 0
3 years ago
Read 2 more answers
Clara and Eli used materials they could find at home to make a simple seismograph. As Clara pulls the strip of paper through the
tatyana61 [14]

Answer:

The recording that Eli and Clara's Seismograph would show will be very close to that a real Seismograph would show. This is because the mechanism they have constructed is very similar to the real one.

Explanation:

hope this helps

6 0
2 years ago
Other questions:
  • A 3.92 cm tall object is placed in 31.3 cm in front of a convex mirror. The focal
    12·1 answer
  • What is in the boron family with 3 valence electrons
    13·1 answer
  • What are the different ways a person could reduce air pollution and energy consumption?
    14·1 answer
  • What is the average acceleration during the time interval 0 seconds to 10 seconds?
    11·1 answer
  • Составь словарный диктант из глаголов неопределённой формы которые есть в орфографическом словаре учебника рядом Перепишите слов
    6·1 answer
  • Cumulonimbus clouds are associated with what type of weather?<br> 1.Stormy<br> 2. Fair<br> 3. Windy
    5·2 answers
  • A 5.0-kg box has an acceleration of 2.0 m/s2 when it is pulled by a horizontal force across a surface with μK = 0.50. Find the w
    13·2 answers
  • Students are using a mallet to hit a drum. The diagram below shows this action.
    7·2 answers
  • A single-phase 60-Hz overhead power line is symmetrically supported on a horizontal cross arm. Spacing between the centers of th
    13·1 answer
  • Outside a spherically symmetric charge distribution of net charge Q, Gauss's law can be used to show that the electric field at
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!