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
DerKrebs [107]
3 years ago
14

A uniform bar of length 3.7 m and mass 4.5 kg is attached to a wall through a hinge mechanism which allows it to rotate freely.

The other end of the bar is supported by a rope of length 6.7 m which is also connected to the wall as shown above. What force in N does the wall exert horizontally on the bar through the hinge? (Consider a force to the right positive and a force to the left negative.
Physics
1 answer:
statuscvo [17]3 years ago
4 0

Answer:

force exert horizontally  is 1 N

Explanation:

given data

bar length = 3.7 m

mass = 4.5 kg

rope length = 6.7 m

to find out

force exert horizontally

solution

we know here bar length and rope length that make angle θ

so here cos θ =  (3.7/6.7)

so equating the torque here to find force in horizontal direction is

Fx = T cos  θ   .........1

and in vertical direction

Tsinθ + N = mg    .............2

so here

we consider equilibrium condition

so

Fx = 0

T cos  θ = 0

T 3.7 / 6.7 = 0

T = 6.7/3.7

T = 1.81

so from equation 1

Fx = T cosθ

Fx = 1.81 ( 3.7/6.7)

Fx = 1 N

so force exert horizontally  is 1 N

You might be interested in
5. Suppose that you wish to construct a simple ac generator having an output of 24 V maximum when rotated at 120 Hz. A uniform m
vazorg [7]

Answer:

32 turns

Explanation:

From the expression for the induced emf,

E = (N)(B)(A) w

E = emf = 24 V

N = number of turns = ?

B = magnetic field strength = 0.10 T

A = Cross sectional Area of the loop = 100 cm² = 0.01 m²

w = Angular speed = (2πf) = (2π × 120) = 754.3 rad/s

24 = N (0.1)(0.01)(754.3)

N = (24/0.7543)

N = 31.8 ≈ 32 turns.

Hope this Helps!!!

6 0
3 years ago
Solve this chemical equation: CH3CH2OH+__O2=CO2+__H2O
masha68 [24]

Answer:

some kind of chemical of which i do not know

Explanation:

4 0
2 years ago
Which of the following best represents a chemical reaction?
Sonja [21]

Answer:

The answer to your question should be D.

Explanation:

reactants are on the laft side of arrow and products are on right side of arrow

7 0
2 years ago
Why do we balance chemical equations
antiseptic1488 [7]
So it could follow the correct mass for the atom
5 0
2 years ago
Light rays in a material with index of refrection 1.35 1.35 can undergo total internal reflection when they strike the interface
nekit [7.7K]

Answer:

1.30

Explanation:

To calculate the critical angle we have ti use the formula:

sin\theta_c=\frac{n_2}{n_1}

where theta_c is the critical angle, n1 is the index of refraction of the material where the light is totally reflected, and n2 is the refractive index of the other material.

By taking n_2 and replacing we obtain:

n_2=n_1sin\theta_c=(1.35)sin75.1\°=1.30

hope this helps!!

6 0
3 years ago
Other questions:
  • A transverse wave on a rope is given by y(x,t)= (0.750cm)cos(π[(0.400cm−1)x+(250s−1)t]). part a part complete find the amplitude
    13·2 answers
  • What must differ between the atom of 2 different elements? protons in the atom electrons in the atom neutrons in the atom proton
    5·1 answer
  • With a magnetic field strength of 1.41 tesla, all of the protons in organic compounds will resonate over a narrow range of frequ
    11·1 answer
  • if an object exposed to salt water that seeps into cracks and forms crystals what is likely to occur?
    13·1 answer
  • Mr. Hershman has purchased a farm that is in the shape of a rectangle. The dimensions of the piece of land are 4.3 km by 4.85 km
    14·1 answer
  • There are slightly more than one hundred elements known to exist. The smallest complete unit of an element that serves as the ba
    13·1 answer
  • List at least three practices that have resulted from the impact factor. Argue which of these is most problematic and explain wh
    7·1 answer
  • About 30 % of earth’s water found In
    6·1 answer
  • A current of 8 A is used to operate a Nespresso coffee machine. Choose the most suitable fuse size from the following
    6·1 answer
  • Which symbol represents a type of radiation that has the same mass as an
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!