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
slavikrds [6]
4 years ago
5

A 14-lb crate is pulled up a frictionless 40° ramp with an initial velocity of v1=0.4 ft/s. It is pulled 0.3 ft from location #1

to #2 by a pulley system and a P=36-lb force pulling down on pulley A. Also, a spring (k=69 lb/ft) is attached
to the crate which is un-stretched at location #2. Assume the spring, cable, and pulleys are massless. Find the final velocity of the crate in ft/sat location #2.
Engineering
1 answer:
Morgarella [4.7K]4 years ago
6 0

Answer:

3.25 ft/s

Explanation:

The crate is of =14-lb=m₁

The angle of inclination is = 40°=Ф

The initial velocity = 0.4 ft/s= v₁

Distance the crate will move is= 0.3 ft =d

The load pulling downwards is = 36 lb= m₂

Acceleration of the pulley, a= m₂g - m₁gsinФ / m₁+m₂ where g= 32.17 ft/s^2

a= 36*32.17 - 14*32.17*sin 40° / 14+36

a=17.37 ft/s^2

Apply the formula for final velocity

V₂²=V₁²+2ad

V₂²=0.4²+ 2*17.37*0.3

V₂²=10.582

V₂ =√10.582 = 3.25 ft/s

You might be interested in
You have been assigned the task of reviewing the relief scenarios for a specific chemical reactor in your plant. You are current
postnew [5]

Answer:

D=0.016m

Explanation:

From the question we are told that:

Discharge Rate F_r=0.5kgls

Pressure P=15Kpa

Temperature T=25=>298K

Ambient pressure is 1 atm.

Generally the equation for Density is mathematically given by

\rho=\frac{PM}{RT}

\rho=\frac{15*10^5*28.0134*10^{-3}}{8.314*298}

\rho=16.958kg/m^2

Generally the equation for Flow rate is mathematically given by

F_r=\mu A\sqrt{Q \rho P(\frac{2}{Q+1})^{\frac{Q+1}{Q-1}}}

Where

Q=Heat coefficient\ ratio\ of\ Nitrogen

Q=1.4

\mu= Discharge\ coefficient

\mu=0.68

Therefore

0.5=0.68 A\sqrt{1.4 16.958 15*10^{5}(\frac{2}{1.4+1})^{\frac{1.4+1}{1.4-1}}}

A=2.129*10^{-4}

Where

A=\frac{\pi}{4}D^2

\frac{\pi}{4}D^2=2.129*10^{-4}

D=0.016m

8 0
3 years ago
Which courses might a mechanical engineer take in college
Tema [17]

Answer:

Fluid dynamics.

Materials science.

Robotics.

Manufacturing processes.

Thermodynamics and heat transfer.

Environmental science.

Explanation:

3 0
3 years ago
Hi, I have an assignment in which i needs to write a report on (Rationalization of electrical energy consumption) and i need cha
Zigmanuir [339]
^^^^^^^^^^^^^^^^^^^^^^^^^
6 0
3 years ago
For a steel alloy it has been determined that a carburizing heat treatment of 7 hour duration will raise the carbon concentratio
Aliun [14]

Answer:

18.6h

Explanation:

To solve this Duck's second law in form of Diffusion will be used.

Also note that since the temperature is constant D (change) will also be constant.

Please go through the attached files for further explanation and how the answer Is gotten.

6 0
4 years ago
The responsibility of removing unauthorized personnel from the permit-required confined space belongs to:
Luba_88 [7]

Answer:

Debido a los peligros que presenta un espacio confinado, se requiere que se utilice un sistema de permisos antes de entrar; en donde deberá incluir un listado de lo que hay que revisar y apuntar antes de entrar para controlar al personal y los riesgos posibles. La responsabilidad de sacar al personal, es de servicios de rescate, con equipo de  protección personal y de rescate, incluyendo  respiradores, y adiestramiento sobre cómo utilizarlo. El  personal de servicio de rescate también debe recibir el  adiestramiento de entrantes autorizados y ser  adiestrado para realizar los deberes de rescate asignados.

8 0
3 years ago
Other questions:
  • Write a SELECT statement that returns the same result set as this SELECT statement. Substitute a subquery in a WHERE clause for
    10·1 answer
  • The hull of a vessel develops a leak and takes on water at a rate of 57.5 gal/min. When the leak is discovered the lower deck is
    9·1 answer
  • The torque required to drive a 40 mm diameter power screw having double square threads with a pitch of 6 mm is 1.0 kN-m. The fri
    14·1 answer
  • 8. What is the proper name of this starting system used on selected vertical crankshaft engines? Click here to enlarge image Sup
    12·1 answer
  • Bainite has finer grains because the transformation takes place at a lower temperature where the nucleation rate is high relativ
    14·1 answer
  • A fuel gas containing 45.00 mole% methane and the balance ethane is burned completely with pure oxygen at 25.00 degree C, and th
    11·1 answer
  • For a 3-Phase, Wye connected system the Line to Line Voltage measures 12,470 Volts, the Phase current measures 120 Amps.
    7·1 answer
  • Calculate the amount of current flowing through a 75-watt light bulb that is connected to a 120-volt circuit in your home.
    10·1 answer
  • Which is a medium that sound can travel through?
    8·2 answers
  • Relationship between civil engineering and geology​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!