Hi all,
I am doing a High Velocity Impact testing using a gas gun
I have to figure out
a) is my test running well and I am not getting any reflection?
Please correct me or help in calculating if I am wrong at any point. I guess, I can figure out by calculating the time required for the...
Homework Statement
An object with a mass of 18 kg is suspended from 2 cables as shown in the below diagram. The tensions in the cables are T1 and T2.
a) Draw a free-body diagram for the object. (already solved)
b) Find the tension in both ropes, T1 and T2. (already solved)
c) If string 2 were...
If a string can handle a max tension of 85 N what is the largest mass that could be lifted with this string if it is lifted with an acceleration of 2.0 m/s^2 up on the moon?
Let up be positive in value.
Ft = - 85 N, a = 2.0 m/s^2, Fg = -1.6 m/s^2
Homework Equations
F = ma -> Fg = mg -> Ft =...
Homework Statement
A rod extends from a vertical wall at an angle of 27º from the horizontal. A 2.5-kg lamp is mounted at the end of the rod. After John throws his 300-g winter coat over the lamp, what is the magnitude of the tension in the rod?
The answers choices are:
A) 30N
B) 70N
C) 27N
D)...
Homework Statement
Find the Acceleration of the system and the tensions in the three ropes.
*If you can't see the picture there's a triangle (ABC), a train of four objects and three pulleys (one exactly at each corner). Side AC (hypotenuse) at the bottom, side AB to the left and side AC to the...
Homework Statement
Isn’t this question same concept as the note as I posted ? I found
P = T + F1+F2= 50(0.3)(9.81) + 50(0.3)(9.81) + (50+100)(0.35)(9.81) = 809.3N
But the ans given is 662.2 N ..
Homework EquationsThe Attempt at a Solution
Homework Statement
The fundamental frequency of vibration of a particular string is f. What would the fundamental frequency be if the length of the string were to be halved and the tension in it were to be increased by a factor of 4?
Answer: 4 f
2. The attempt at a solution
We have f = f1...
The Question:
Using a simply pulley/rope system, a crewman on an Arctic expedition is trying to lower a 5.65-kg crate to the bottom of a steep ravine of height 23.9 meters. The 60.9-kg crewman is walking along holding the rope, being careful to lower the crate at a constant speed of 1.50 m/s...
I have been wanting to write an equation which predicts the tension on a circular membrane (AKA drumhead). However, I'm not sure that my answer is on the right kind of track, if it's even correct.
As for the procedures I took, first I started with the equation for tension on a string, which I...
1. Homework Statement
In one of the versions of the "Giant Swing", the seat is connected to two cables, one of which is horizontal (Figure 1) . The seat swings in a horizontal circle at a rate of 33.0 rev/min .
If the seat weighs 295 N and a 869-N person is sitting in it, find the tension in...
If there is a 70N tension in a rope attached to a 4.0 kg bucket, what will be the vertical acceleration of the bucket?
I'm not really sure how to do this. I can find tension but not acceleration. I think I'm missing something simple. I'm also confused about the direction because it doesn't...
I solved the equilibrium equations and found that link BD is in tension while link CE is in compression, but my resulting answers for normal stress were wrong.
The solutions show that the cross area to be used for normal stress at links BD and CE should be different. Link BD should incorporate...
Homework Statement
the metal rod is supported by another metal rod at one end . The metal rod is supported by another metal rod at the end. so , the direction of tension of metal rod is acted upward , right ?( this is the initial prediction) But , i was told that the tension that we get from...
Homework Statement
Explain why the force diagram is as shown:
[PLAIN]http://
Homework EquationsThe Attempt at a Solution
[/B]
For the system, the gravity vector makes sense. However, I don not understand exactly why there are three tension forces. First of all, to me, it would seem that...
Homework Statement
Let's say the metal rod is held by a cable and supported by a pin at the bottom, the reaction of thr cable is acted downwards... Why?
Homework EquationsThe Attempt at a Solution
Homework Statement
In the figure below, the objects are attached to spring balances calibrated in Newtons. Give the readings of the balances in each case, assuming that the strings are massless and the incline is frictionless.
I need help with (d). If the picture's too grainy to read off...
Homework Statement
how to determine the direction of tension ? why it acted in downward direction ? wy not in upward direction ?
Homework EquationsThe Attempt at a Solution
Homework Statement
why i figure b , the direction of FBD is in downward direction , whereas in a , its in upward directon
Homework EquationsThe Attempt at a Solution
Homework Statement
This is a solved problem. It is attached. Why is sin theta horizontal, and cosine theta vertical?
Homework Equations
All relevant equations are given.
The Attempt at a Solution
The solution is given.
Hi, I am having a seemingly hard time trying to find the tension in this rope. I've looked everywhere for a problem with these given variables but I found none. Here we are given: T1, T1 angle, mass of man and that is all. I included the picture here.The Attempt at a Solution
I found, t1y, which...
Homework Statement
The system is in equilibrium with the center string exactly horizontal. Find T1, T2, T3, and theta
Homework Equations
T1cos(angle1)-T2cos(angle2)=0
T1sin(angle1)+T2(angle2)-mass1=0
The Attempt at a Solution
Currently working on mass 1
When making free body diagrams for...
Homework Statement
Homework Equations
F=ma
The Attempt at a Solution
Does the total Force F=50N divide evenly between m1+m2 and m3? Meaning the tension between m1/m2 & m3 is 25N given m1+m2=m3. Also, is the acceleration between m1/m2 & m3 the same as the acceleration at m3...
Homework Statement
Three masses as shown below are resting on a horizontal, frictionless surface. The blocks are connected by massless, frictionless ropes. A force F of 60 N acts on the system as shown. Find the tensions in each of the other two ropes. m1= 10kg, m2 = 20 kg and m3 = 30 kg...
Homework Statement
Block "m1" sits on a horizontal frictionless surface. Block "m2" is hanging below the pulleys as shown. All of the pulleys are massless and frictionless. Given [m1, m2]. Determine:
a. The tension in each rope.
b. The acceleration of each block.
Homework Equations
Sum(F) =...
Homework Statement
A) Draw a free body
B) determine the tension in rope A and the reactions in B.
Homework Equations [/B]
Standard equilibrium equations
The Attempt at a Solution
My free body shows a collinear force T through the rope, the given downward force at 5ft, and then a Bx and By...
Homework Statement
A loop of flexible chain, of total weight W, rests on a smooth, frictionless right circular cone of base radius r and height h. The chain rests in a horizontal circle on the cone, whose axis is vertical. Find the tension in the chain.
Homework Equations
Virtual work, but...
Homework Statement
The steel beam is supported by cables AB and CD and a ball-and-socket joint at O. The position of the vertical point load, P influences the reaction at O as well as the tension in each cable.
First you need to derive the equations for the tension in cable AB, the tension in...
Homework Statement
17. Give the correct tension, T, in the marked rope for each situation. The rope is held so the system is stationary. All ropes and pulleys are massless and frictionless.
A) T = W B) T = W/2 C) T = W/3 D) T = 2W E) T = 3W/2
F) T = 2W/3 G) T = W/7 H) T = W/5...
Homework Statement
AP French Mechanics Problem 7-1
Two identical gliders, each of mass m, are being towed through the air in tandem. Initially they are traveling at a constant speed and the tension in the tow rope A is T(sub0). The tow plane then begins to accelerate with an acceleration A...
Homework Statement
Answer True, False, or Cannot tell to each of the five statements below.
A small projectile is launched horizontally 1 m above the surface of a smooth, airless planet, with sufficient speed for orbit. A bug riding in a small hole in the projectile has apparent weight...
Homework Statement
[/B]
Your niece finds her father's watch. The light watch chain has a length of 48 cm, and the mass of the watch is 270 g. Your niece swings the watch in a vertical circle, maintaining the speed of the watch at 2.3 m/s. Find the tension in the chain when it makes an angle of...
So my pulley system has 3 masses two of which are connected to a center mass on top of a table. No mass was given for any of the objects but of two masses hanging from the table, the one on the right is 2 times the mass on the left. I hope I haven't confused you but its like a three step diagram...
Homework Statement
Looking for the tension in cable Tcd when the moment on A is equal to 0.
P1 = 73N.
I’ve had several attempts but I can’t seem to obtain the answer, which is 110,8 N.
Can anyone help me with this question?
Homework EquationsThe Attempt at a Solution
Homework Statement
Chain of mass M hangs between 2 walls with its ends at the same height. The chain makes an angle θ with each wall. Find the tension at the lowest point of the chain.
a) By considering the forces on half of the chain.
b) By using the fact that the height of the chain is...
Homework Statement
At a latitude of 50° north a mass is hanged by a massless string. By the means of an angle how much does the mass deviate from the Earth's radius due to rotation of the earth? Consider the Earth as a spherical body.
Homework Equations
Fcp=mv^2/r
w=dθ/dt
v=wr
The Attempt at a...
Homework Statement
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is μs = 0.579, and the kinetic friction coefficient is μk = 0.435. The combined mass of the sled and its load is m = 336 kg. The ropes are...
This was a problem on an exam that our professor later discovered was unsolvable THE WAY HE POSED THE QUESTION. First off, it's important to note that this is from a statics class, therefore Fnet = 0 will be true for all problems in our course.
So here's my thoughts on this and I would like to...
Homework Statement
[/B]
A sign with a mass of 27 kg is hanging in two wires both making an angle of 25 degrees with the vertical. Find the tension in one of the wires. Give your answer in Newtons (N) and with 3 significant figures.
Homework Equations
Ftens=gravity/sin(x) ?
The Attempt at a...
Homework Statement
A 1.26kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.395. To make the toaster start moving, you carelessly pull on its electric cord. For the cord tension to be as small as possible, you should pull at...
Homework Statement
A 65kg rock climber is abseiling down a rock, consider the situation when he's in equilibrium and standing at an angle on the surface of the rock, hanging from a rope.
The rope is at an angle of 40 degrees to the horizontal, calculate the tension in the rope
Homework...
Homework Statement
Look I have an exercise about trusses in vector mechanics. It's the following:
https://scontent-lax3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/12003339_1645511085733429_8210043018491702007_n.jpg?oh=4955534403fb6f3f5f9a40c9c0b8ecbc&oe=569761ED
I have to determine the forces in...
Homework Statement
The diagram shows the instant when a long slender bar of mass 4.9 kg and length 4.9 m is horizontal. At this instant the mass m= 6.5 kg has a vertical velocity of 4.0 m/s.
If the pulley has negligible mass and all friction effects may be ignored, what is the magnitude of the...
In the figure we see two blocks connected by a string and tied to a wall, with θ = 33°. The mass of the lower block is m = 0.9 kg; the mass of the upper block is 4.0 kg. Find the tension in the string that is tied to the wall.
-I have the forces of Block A as Tension, Normal Force, and Gravity...
Homework Statement
I was asked to find the tension in CD in this question . The ans given is 4.22kN.
my working is arc tan (surd 13)/12, tetha = 16.7 degree
CD cos (16.7) = 20kN
CD= 21kN.
p/s: i have used pythagora's theorem to fe the surd 13
Homework EquationsThe Attempt at a Solution
Homework Statement
A railway engine of mass 100 tonnes is attached to a line of trucks of total mass 80 tonnes. Assuming there is no resistance to motion, find the tension in the coupling between the engine and the leading truck when the train: (a) has an acceleration of 0.020 ms-2, (b) is...
Two steel straps are use to hold member BCD level. The size of each strap is 12 mm thick and 50 mm wide. A 16 mm diameter bolt is used to connect thesteel straps to the 89 x 89 mm post at A. A 25 kN is applied at the free end of the cantilever at point D. Determine:
the tensile stress developed...
Homework Statement
A 10.0kg sphere is attached to the incline by a horizontal string. Determine the tension in the string.
Homework Equations
(F⃗ net)x=ΣFx=0
(F⃗ net)y=ΣFy=0
Στ=0
τ = (radial disance)(F)
The Attempt at a Solution
1. I began by determining all the relevant forces associated...
At one point I had been trying to construct an equation which would calculate the tension on a tuned string with a change in temperature (and therefore the fundamental frequency), but found my calculations were wrong. By extension, the purpose of the project was to be able to calculate what...
Homework Statement
A 0.020-kg mass is attached to a 1.2-m string and moves in a horizontal circle with a constant speed. The tension in the string is measured at 0.200 N. What is the measure of angle θ?
Homework Equations
∑F=ma, a=v^2/r
The Attempt at a Solution
I broke down the forces at...
Homework Statement
A rope is used to lower a 1.1 kg bucket into a well at an acceleration of 1.9 m/s2. Determine the tension in the rope (in Newtons). Assume that air resistance is negligible and the acceleration due to gravity is -9.8 m/s2. Take the positive direction to be upward.
Homework...