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
Olegator [25]
4 years ago
6

A box is held at rest by two ropes that form 30° angles with the vertical. The tension T in either rope is 42 N. What is the wei

ght (w) of the box?
73 N

36 N

79 N

86 N

62 N

Physics
1 answer:
Kipish [7]4 years ago
4 0

Answer:

w = 73 N

Explanation:

Since the box is held by the ropes it means that the resulting tension is equal to the weight of the box

T_res = w

Now, the resulting tension is a combination of the tension of each rope.

Since we want to find the vertical component we must multiply by the cosine of 30 degrees the value of T

T_res =  T*cos(30) + T*cos(30)

T_res = 2*(42 N)*(0.866)

T_res = 72.746 N

T_res = w = 72.746 N

You might be interested in
a street light is mounted at the top of a 15 foot pole. A man 6 ft tall walks away from the pole wit a speed of 7 ft/s along a s
Mariulka [41]

Answer:

16.3 ft/s

Explanation:

Let d=distance

and

x = length of shadow.

Therfore,

x=(d + x)

 = 6/15

So,

    15x = 6x + 6d

     9x = 6d.

x = (2/3)d.

As we know that:

dx=dt

   = (2/3) (d/dt) 

Also,

Given:

d(d)=dt

     = 7 ft/s

Thus,

d(d + x)=dt

           = (7/3)d (d/dt)

Substitute, d= 7  

d(d + x) = 49/3 ft/s.

Hence,

d(d + x) = 16.3 ft/s.

4 0
3 years ago
The free-body diagram of a crate is shown. A free body diagram with 4 force vectors. The first vector is pointing downward, labe
satela [25.4K]

The net force acting on the crate is determined as 176 N to the left.

<h3>Net force acting on the crate</h3>

The net force acting on the crate is calculated as follows;

∑F = F1 + F2 + F3 + F4

F(net) = -440y + 176x + 440y - 352x

F(net) = -176 x

The resultant force is pointing in negative x direction.

Thus, the net force acting on the crate is determined as 176 N to the left.

Learn more about net force here: brainly.com/question/14361879

#SPJ1

8 0
2 years ago
Two football players are attempting to tackle each other. If one football player has a mass of 100 kg and pushes with a force of
Vaselesa [24]

Answer:

is it 20kg. Two opposing forces pushing onto each other

8 0
3 years ago
3. Si usted duplicara la amplitud de un M.A.S. ¿cómo cambiaría la frecuencia, velocidad máxima, la aceleración máxima y la energ
WITCHER [35]

Answer:

Explanation:

la frecuencia = ω/2π, nada cambio

v(max) = ωA → ω2Α = 2ωA  duplicara velocidad máxima

a(max) = ω²Α → ω²2Α = 2ω²Α duplicara la aceleración máxima

la energía total ½kA² → ½k(2Α)² = 4(½kA²) cuatro veces la energía

8 0
3 years ago
For a solar eclipse to occur which of the following alignments must be necessary
katovenus [111]
Very specific alignment of the Sun, Earth, and Moon. If the Moon is lined up precisely with the Sun from the Earth's point of view, the Moon will block Sunlight from reaching the Earth, causing a solar eclipse.
6 0
3 years ago
Other questions:
  • Can someone help me with this
    10·1 answer
  • How does density of the medium affect the speed of a wave?
    6·1 answer
  • A car traveling at 34 m/s starts to decelerate steadily. It comes to a complete stop in 6 seconds. What is its acceleration?
    12·1 answer
  • The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.420 with the floor. If
    7·1 answer
  • Power can be defined as
    7·2 answers
  • Now, consider whether the following statements are true or false:_____________________________________.
    14·1 answer
  • On your first trip to Planet X you happen to take along a 290 g mass, a 40-cm-long spring, a meter stick, and a stopwatch. You'r
    12·1 answer
  • a bowling ball hits two standing bowling pins at the same time. which of the following is true. assume that all collisions are e
    10·1 answer
  • How would the period of a planet depend on its orbital distance from a star? in this comparison,
    10·1 answer
  • Struggling on this, really need help
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!