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
Deffense [45]
3 years ago
8

A block-and-tackle pulley hoist is suspended in a warehouse by ropes of lengths 2 m and 3 m. the hoist weighs 430 n. the ropes,

fastened at different heights, make angles of 50° and 38° with the horizontal. find the tension in each rope and the magnitude of each tension. (let t2 and t3, represent the tension vectors corresponding to the ropes of length 2 m and 3 m respectively. round all numerical values to two decimal places.)

Physics
1 answer:
ICE Princess25 [194]3 years ago
7 0
Refer to the diagram shown below.

For horizontal equilibrium,
T₃ cos38 = T₂ cos 50
0.788 T₃ = 0.6428 T₂
T₃ = 0.8157 T₂                (1)

For vertical equilibrium,
T₂ sin 50 + T₃ sin 38 = 430
0.766 T₂ + 0.6157 T₃ = 430
1.2441 T₂ + T₃ = 698.392        (2)

Substitute (1) into (2).
(1.2441 + 0.8157) T₂ = 698.392
T₂ = 339.058 N
T₃ = 0.8157(399.058) = 276.571 N

Answer:
T₂ = 339.06 N
T₃ = 276.57 N

You might be interested in
2. A rock is dropped off a bridge. How fast is the rock
zhenek [66]

Answer:

a) The velocity of rock at 1 second, v = 9.8 m/s

b) The velocity of rock at 3 second,  v = 29.4 m/s

c) The velocity of rock at 5.5 second,  v = 53.9 m/s

Explanation:

Given data,

The rock is dropped from a bridge.

The initial velocity of the rock, u = 0

a) The velocity of rock at 1 second,

   Using the first equation of motion

                         v = u + gt

                         v = 0 + 9.8 x 1

                          v = 9.8 m/s

b) The velocity of rock at 3 second,

                         v = u + gt

                         v = 0 + 9.8 x 3

                          v = 29.4 m/s

c) The velocity of rock at 5.5 second,

                         v = u + gt

                         v = 0 + 9.8 x 5.5

                         v = 53.9 m/s

5 0
3 years ago
What flows in electricity?<br> A. Electrons<br> B. Protons<br> C. Neutrons
nordsb [41]

Answer:

A.

Explanation:

Electrons

6 0
3 years ago
A dog has a mass of 20 kg. If the dog is pushed across the ice with a force of 40 N, what is its acceleration?
olasank [31]

Answer:

The acceleration is 2 m/s2.

Explanation:

We calculate the acceleration (a), with the data of mass (m) and force (F), through the formula:

F = m x a  ---> a= F/m

a = 40 N/20 kg                   <em>  1N= 1 kg x m/s2</em>

a= 40 kgx m/s2/ 20 kg

<em>a= 2 m/s2</em>

7 0
3 years ago
What is a molecule called when it has more than one element?
Alinara [238K]
The correct answer is compound
4 0
3 years ago
Read 2 more answers
Where is potential energy the greatest on a rollercoaster?
lidiya [134]
On a roller coaster, the greatest potential energy is at the highest point of the roller coaster
4 0
3 years ago
Other questions:
  • Both of the examples please.
    14·1 answer
  • Look at the pendulum diagram. at which point is the kinetic energy of the pendulum the greatest
    5·2 answers
  • How deep would you have to drill to reach the center of earth?
    10·1 answer
  • Since sinusoidal waves are cyclical, a particular phase difference between two waves is identical to that phase difference plus
    6·1 answer
  • Sound waves need a ___________ for the vibrations to travel and they move in the pattern of a ______________ wave.
    7·1 answer
  • Suppose a balloon was tied to a pole. What happens?
    10·1 answer
  • A school bus traveling at 11.1 m/s has a momentum of 152625 kg*m/s what is the mass of the bus
    8·1 answer
  • 7. Two rocks are rolled down a hill at different speeds. At the bottom of the hill is a brick wall. Which rock will hit the bric
    5·1 answer
  • HELPpPpo ASAP
    5·1 answer
  • The volume in the pump when the pump piston is all the way down represents the _______
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!