Friday

April 18, 2014

April 18, 2014

Number of results: 3,164

**physics**

Make your coordinate system so that tension is positive for the object with the given mass and negative for the object with the unknown. So the x component for the first weight is going to be w1*cos(theta). We are not given the angle so we can rewrite this as n1/w1. This can ...
*Tuesday, January 10, 2012 at 9:39pm by MEOW*

**Physics(wave motion and propagation)**

If it is hanging freely the tension is highest at the top where the entire weight of the rope is on the hook. The tension at the bottom is zero. The speed of the wave increases with the square root of tension, and is therefore highest at the top. Therefore the wavelength is ...
*Thursday, November 10, 2011 at 7:48am by Damon*

**physics**

Call the left side tension T1 and the right side tension T2. Vertical and horizontal equilibrium equations are: Mg = T1 cos53 + T2 cos37 0 = T1 sin53 - T2 sin37 Mg = T1 cos 53 + T1*cos37*(sin53/sin37) T1 = Mg/(0.6918 + 1.0598) = 0.5709 M*g You set up the equations or did the ...
*Saturday, April 2, 2011 at 10:07am by drwls*

**physics**

Transverse waves with a speed of 50.0 m/s are to be produced on a stretched string. A 5.00m length of string with a total of 60 grams is used. a) what is the required tension in the string? b) calculate the wave speed in the string if the tension is 8.00n.
*Tuesday, May 11, 2010 at 4:34am by yolanda*

**Physics**

A 25.0 Kg sled with a rope attached is being pulled down a slope with a 21 degree angle. There is an 8 Kg box on the sled.The tension gradually increases. At what value of tension does the box slip?
*Monday, November 8, 2010 at 8:36am by Janice*

**physics**

On the two cords, use symettry arguements: the vertical components will cancel (equal and opposide directions), so the tension in the upper cord= 1/2 net force/cosTheta net force= mv^2/r tension= 1/2 mv^2/(rcosTheta)
*Saturday, November 21, 2009 at 12:39pm by bobpursley*

**physics**

Add the elevator mass and the load mass. Multiply the sum by g to get the cable tension in Newtons. The product of cable tension and velocity is the power required, in Watts. If it were accleerating, still more power would be needed.
*Friday, May 21, 2010 at 12:29pm by drwls*

**Physics**

a. label the forces at the supports, and the hanging end. Here it is in my head: the angle at the rope to horizontal is Theta. W is the weight of the sign. T is tension. Torque about A: Tension*Lengthstring*cosTheta-Weight=0 but cosTheta= .48/lengthstring
*Friday, May 18, 2012 at 6:07am by bobpursley*

**physics**

friction on the ramp=mg*mu*cosTheta downward force due to weight=mg sinTheta Net force=mass*acceleration Tension-friction-gravityforcedown=ma solve for tension check my thinking.
*Thursday, September 27, 2012 at 7:41pm by bobpursley*

**physics!!!!!**

You have to assume the small spherical insulator is a point charge. The force horizontal is given by coulombs law, so looking at the diagram, TanTheta=horizontalforce/vertical force. Of course, the vertical force is mg. Tension in the wire? SinTheta=horizonalforce/tension.
*Sunday, March 23, 2008 at 10:36am by bobpursley*

**Physics **

Two ropes are attached to a wagon, one horizontal to the west with a tension force of 30 N, and the other east and at an angle of 30° northward and a tension force of 40 N. Find the components of the net force on the cart. Show all your work.
*Saturday, December 10, 2011 at 3:33pm by Jay *

**physics**

F=totalmass*a F=(2M)a a= F/2M but this is the a for each block, so the tension pulling the second block is tension= ma= m(F/2m)=1/2 F
*Thursday, November 18, 2010 at 4:06am by bobpursley*

**physics**

The tension in which cord? You have not provided nor sufficiently described the figure. I suspect that there is a cord between each block and you want the tension in each one. If so, write a free body equation for each block and solve the three equations in three unkowns.
*Wednesday, February 13, 2008 at 10:01pm by drwls*

**Physics**

Actually, the Mechanical advantage is two(two ropes are pulling on the 52kg mass, so you are right. Tension is 52g/2 The tension in the upper, and lower rope is 52g I am not certain what equations you are working with. At the lower pulley, Let T up be + T+T-mg=0
*Thursday, October 8, 2009 at 11:43am by bobpursley*

**Physics**

Consider the following equation in the y-direction. Fy=T+Fg=ma Or in this case... T+Fg=(mv^2)/R Tension equals to 0 because when the pail of water is at the highest point, tension is nonexistent. Therefore... mg=(mv^2)/R Cancel out mass g=(v^2)/R (Rg)^(1/2)=v Plug in values.
*Monday, October 19, 2009 at 10:46am by Young J. Hong*

**Physics**

Determine the tension in the string at the top and bottom of its path when a 0.3 kg yo-yo is whirled in a vertical circle of radius 0.5 m at 2.5 m/s. I'm sure I can solve this, I just can't find the equation for tension. The only equation I could find in my book is if ...
*Sunday, December 13, 2009 at 8:55pm by Rudy*

**physics**

A 3.60 kg object is attached to a vertical rod by two strings as in the figure below. The object rotates in a horizontal circle at constant speed 7.15 m/s. (a) Find the tension in the upper string. N (b) Find the tension in the lower string. N
*Tuesday, October 18, 2011 at 4:08pm by jones*

**Physics**

Given a wooden sign that is held up by two ropes. One rope at a 37.0 degrees to the horizontal has a tension of 2.00N and the other at an angle of 153.5 degrees to the horizontal feels a tension of 1.785N. How much does the sign weight?
*Wednesday, September 26, 2012 at 11:57am by Tiffany*

**math**

Two squirrels are sitting on a rope as shown. The tension in segment BD is TBD = 6.3 lb at an angle of ϕ = 47 degrees. The tension in segment AB is TAB = 5.229 lb. Find the weight of the squirrel at B and the angle α.
*Friday, December 6, 2013 at 6:51pm by nick*

**physics**

An atwood machine without a pulley. work done by gravity= 11m*Bg KE gained= 1/2 (A+B)v^2 set those two equal, solve for v b) Tension in rope: on the second mass, Tension*11=1/2 A v^2, solve for tension c) Now, you have initial KE of 1/2 (A+B)v^2, you are gaining GPE energy at ...
*Thursday, November 18, 2010 at 3:07am by bobpursley*

**Physics**

A 0.13 kg meter stick is held perpendicular to a wall by a 2.6 m string going from the wall to the far end of the stick. (a) Find the tension in the string. _________N (b) If a shorter string is used, will its tension be greater than, less than, or the same as that found in ...
*Thursday, May 31, 2007 at 12:17pm by Jeannine*

**Physics**

So what is the question? All you haven't been given is the weight of the bird. Figure the angle at the center (vertical to wire) tanTheta=15/.5 Now, if tension is 70, and each side supports half the weight of the bird then cosTheta=weight/2 / tension and you solve for weight.
*Friday, October 23, 2009 at 10:32pm by bobpursley*

**Physics**

A uniform beam of weight 520 N and length 3.4 m is suspended horizontally. On the left it is hinged to a wall; on the right is it supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap the cable is 1200 N. What value of D ...
*Wednesday, October 28, 2009 at 11:10pm by Ray*

**Physics**

A uniform beam of weight 520 N and length 3.4 m is suspended horizontally. On the left it is hinged to a wall; on the right is it supported by a cable bolted to the wall at distance D above the beam. The least tension that will snap the cable is 1200 N. What value of D ...
*Wednesday, October 28, 2009 at 11:51pm by Ray*

**Physics 11**

What is the question? Acceleration? Tension in the lower string? If acceleration = a, then (M+m)(g+a) = F = 8.48N Solve for a. Tension in the lower string = T = m(g+a)
*Thursday, October 15, 2009 at 8:08pm by MathMate*

**Physics**

in the vertical, tension at the bottom is mg+mv^2/r In the horizontal, tension is mv^2/r 1.18 mv^2/r=mg+mv^2/r solve for v
*Sunday, October 24, 2010 at 1:30pm by bobpursley*

**Physics**

The standard man in the figure below holds with his left arm vertically a dumbbell of mass M = 5,471 g with the intention to do concentration curls. For the position shown, we consider the following four major forces: the weight of the arm and the tension in the shoulder. This...
*Friday, October 2, 2009 at 3:48pm by Sam*

**Physics**

Horizontal circle: Centripetal force (horiz.)+weight of mass(vert.) Tension on the string, Th = √((mv²/2)²+(mg)²) Vertical circle: maximum tension is when the mass is at the bottom of the circle when the centripetal force is added to the weight. Tension in...
*Thursday, November 25, 2010 at 12:50pm by MathMate*

**PHYSICS**

the wire on each side supports mg/2 Looking at the force diagram, sinTheta(angle of depression)=(mg/2)/Tension but tanTheta=3/20 according to the dimensions. Tension= 20/sinTheta= 20 /sin(arctan.15)
*Monday, November 29, 2010 at 7:04pm by bobpursley*

**Physics**

A street lamp weighs 150 N. It is supported by two wires that form an angle of 140° with each other. The tensions in the wires are equal. (a) What is the tension in each wire? (b) If the angle between the wires is reduced to 110°, what is the tension in each wire?
*Tuesday, February 11, 2014 at 9:33am by Khadija*

**physics**

A chandelier with mass m is attached to the ceiling of a large concert hall by two cables. Because the ceiling is covered with intricate architectural decorations the workers who hung the chandelier couldn't attach the cables to the ceiling directly above the chandelier. ...
*Tuesday, October 6, 2009 at 2:59pm by Kalen*

**physical chemistry**

how can i get the critical temperature of CO2 given a set of data which consists of surface tension and density at different temperatures. The table looks like this: T(oC) density surface tension 0 0.927 4.50 20 0.772 1.16 I really need some help about this...please...
*Saturday, July 5, 2008 at 9:16pm by kkk*

**AP Physics**

First, find the Force in the y-direction. Fy=T+Fg=ma ..or in this case T+Fg=(mv^2)/R Tension equals to 0 because when the pail of water is at its highest peak, there, tension does not exist. so now we have mg=(mv^2)/R Cancel out mass to get... g=(v^2)/R (gR)^(1/2)=v Plug in ...
*Thursday, September 24, 2009 at 1:52am by Young J. Hong*

**Physics**

draw the figure. Let the 42deg be on the right. the horizontal components are equal or Tl*cos37=Tr*cos42 the vertical components add to the weight of the light. 2.3*9.8=Tlsin37+Trsin42 two equaions, two unknowns, solve for Tension left and Tension right.
*Friday, March 14, 2014 at 9:37am by bobpursley*

**biomechanics**

a)Describe the structure of the contractile elements of skeletal muscle b)Sketch a graph of teh relationship between developed tension and muscle length and explain the shape of the curve in terms of the interaction between thick and thin myofilaments C) sketch a graph of the ...
*Wednesday, November 14, 2012 at 9:12am by dmkp*

**College Physics**

An 0.10 kg object is hanging from your rearview mirror. While you are accelerating 4.0 m/s2 the string mkes an angle with the vertical. There is a weight force going down and tension force along the string. What is the tension force and the angle?
*Saturday, February 20, 2010 at 12:31pm by Anonymous*

**A level, Mechanics**

An object of mass 100 kg is suspended by two identical cables. The tension in cable one is (400i + 300j)N, where i and j are horizontal and vertical unit vectors respectively. The tension in cable two is (pi + qj)N. If the object remain at rest, find p and q
*Thursday, April 19, 2012 at 12:16am by Tony*

**physics**

A ball with a mass of 4·kg is moving in a vertical circle at the end of a 0.9·m long rope. When the ball is at the top of the circle, it is going 7·m/s. What is the tension in the rope? (Again...don't need the answer...just the formula on how to find tension...already ...
*Tuesday, July 24, 2012 at 11:49pm by bethany*

**physics**

A ball with a mass of 4·kg is moving in a vertical circle at the end of a 0.9·m long rope. When the ball is at the top of the circle, it is going 7·m/s. What is the tension in the rope? (Again...don't need the answer...just the formula on how to find tension...already ...
*Tuesday, July 24, 2012 at 11:50pm by bethany*

**Physics**

A 1,500 kg crate hangs motionless from a crane cable. What is the tension in the cable? Ignore the mass of the cable. Suppose the crane accelerates the crate upward at 1.2 m/s2. What is the tension in the cable now?
*Tuesday, October 5, 2010 at 5:47pm by Anonymous*

**Ap Physics**

The component of the rope tension along the direction of motion is (Work)/(distance pulled) = 3600/51.3 = 70.2 N But you also know that 70.2 = (rope tension)x cos theta Therefore sin theta = 0.877 theta = 28.7 degrees
*Friday, October 2, 2009 at 1:19am by drwls*

**physics**

the pulling force is m2*g the masses being pulled is m1+m2 F=ma a= F/m= m2*g/(m1+m2) tension in the cable: Tension=m1*a
*Monday, September 26, 2011 at 6:22pm by bobpursley*

**Physics**

sorry. 1/2 mg/Tension=tanTheta tension= 1/2 mg/tanTheta
*Thursday, November 12, 2009 at 6:09pm by bobpursley*

**Science**

Since the stick is 100 cm long, one string (with tension T1) is attached 30 cm from the center and the other (T2) is 20 cm away, on the other side of center. For a balance of the torque about the center, the string closest to center must have 1.5 times as much tension as the ...
*Monday, March 12, 2012 at 6:50am by drwls*

**Physics**

An 7.5 crate is pulled 5.4 up a 30 degree incline by a rope angled 19 degrees above the incline. The tension in the rope is 130N and the crate's coefficient of kinetic friction on the incline is 0.24. How much work is done by tension? by gravity? by the normal force?
*Wednesday, November 7, 2012 at 1:04am by Anonymous*

**College Physics**

A ball with a mass of 4·kg is moving in a vertical circle at the end of a 0.9·m long rope. When the ball is at the top of the circle, it is going 7·m/s. What is the tension in the rope? (Again...don't need the answer...just the formula on how to find tension...already ...
*Sunday, July 8, 2012 at 9:44pm by bethany*

**physics**

Three boxes are connected by cords, one of which (mA) wraps over a pulley having negligible friction on its axle and negligible mass and two boxes (mB & mC) are hanging. The masses are mA = 22.0 kg, mB = 40.0 kg, mC = 16.0 kg. -When the assembly is released from rest, what is ...
*Thursday, February 8, 2007 at 8:16pm by **chocolatekisses*

**Physics**

Two buckets of sand hang from opposite ends of a rope that passes over an ideal pulley. One bucket is full and weighs 110 N; the other bucket is only partly filled and weighs 50 N . Initially, you hold onto the lighter bucket to keep it from moving. What is the tension in the ...
*Tuesday, September 29, 2009 at 9:25pm by Bree*

**biology**

what is the link between the transpiration rate and water tension plants? The higher the transpiration rate and drier the soil, the higher the water tension and larger the amplitude.
*Friday, January 19, 2007 at 1:16pm by kim*

**physics**

a wire under tension vibrates with a fundamental frequency of 256Hz. what would be the fundamental frequency if the wire were half as long, twice as thick, and under 1/4 tension?
*Thursday, August 16, 2012 at 1:34am by Anonymous*

**Physics**

I wondered if someone would check my work concerning an Atwood's Machine. (I am led to believe the answers for these two questions should be the same but I'm not coming out that way.)Thank you! 8.) Caluclate the tension in the Atwood's Machine string for the case when m2 is ...
*Saturday, September 22, 2012 at 1:37pm by Miaow*

**physics**

well, if the right hand is horizontal, the left hand is holding the weight in the vertical a) 45/tensionright = sin50 if the 50 degrees is measured from the horizontal. The tension in the left cable has to equal the horizontalcomponent of tension in the slanted cable: ...
*Monday, January 17, 2011 at 2:58pm by bobpursley*

**Physics**

wave speed= sqrt (tension/(mass/length)) now, mass/length in the strings (assuming same material) is proportional to area, or diamter^2 wavespeed=Constant*sqrt (tension/diameter^2) so wavespeed1/wavespeed2= sqrt(Tension1/tension2 * diameter2^2/diameter1^2)
*Friday, November 20, 2009 at 11:00am by bobpursley*

**Forces w/ tension**

Assume that three blocks portrayed below move on a frictionless surface and that a 42 N force acts on the 3.0 kg block. Determine (a) the acecleration given the system, (b) the tension inthe cord connecting the 3.0kg and the 1.0 kg blocks, and (c) the force exerted by the 1....
*Thursday, December 7, 2006 at 7:46pm by Armando*

**physics help 4**

Get the wave speed from the ratio (wire length)/64.3*10^-3 s The wave speed equals the square root of (Wire tension)/(wire lineal density) Solve for the wire tension, T. That will equal the weight (in Newtons) of the 3 kg mass, from which you can derive g on that planet.
*Sunday, November 9, 2008 at 11:54pm by drwls*

**physics**

A vibrator moves one end of a rope up and down to generate a wave. The tension in the rope is 58 N. The frequency is then doubled. To what value must the tension be adjusted, so the new wave has the same wavelength as the old one? would it be doubled?
*Monday, January 26, 2009 at 9:58pm by Sierra*

**physics help plz**

(a) When the buckets are at rest, the tension in the cords just equal the weight that is suspended beneath them. Each bucket weighs m•g = 3.5• 9.8 = 34.3 N. The lower bucket has gravity down of 34.3 N and the tension (T) in the lower string up, the acceleration is 0, so the ...
*Sunday, May 6, 2012 at 4:26pm by Elena*

**pHYSics PLEASE I NEED HELP**

a/ the direction of theforce holdingthe ball at the end of the rope is toward the center. The force in the rope is called tension, and the tension is supplying the centriptal force causing the ball to change directions. b. the ballwould go in a straight line from the point ...
*Monday, June 4, 2012 at 4:16pm by bobpursley*

**phy**

Is the string massless? If the string is of mass per unit length p, then we will get tension as a function of height. However, if the string is massless, the tension in the string will simply equal the force that the box puts on it. Draw a force diagram. That's how you always ...
*Sunday, October 24, 2010 at 4:53pm by Jo*

**Math- Help!!**

A local tennis pro-shop strings tennis rackets at the tension (pounds per square inch) requested by the customer. Recently a customer made a claim that the pro-shop consistently strings rackets at lower tensions, on average, than requested. To support this claim, the customer ...
*Saturday, December 12, 2009 at 2:38pm by Cyndi*

**Physics**

A rescue helicopter is lifting a man (weight = 797 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 0.711 m/s2? (b) What is the tension during the remainder of the rescue when ...
*Wednesday, March 20, 2013 at 11:46am by Kelly*

**Physics**

A rescue helicopter is lifting a man (weight = 797 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 0.711 m/s2? (b) What is the tension during the remainder of the rescue when ...
*Wednesday, March 20, 2013 at 12:51pm by Heather*

**physics**

A rescue helicopter is lifting a man (weight = 925 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 2.59 m/s2? (b) What is the tension during the remainder of the rescue when ...
*Sunday, June 30, 2013 at 1:22pm by ashley*

**Physics**

Yes it is impossible because the mass has weight. The tension force of the string can only operate in the direction of the string. There must be an upward component of the tension force that balances the weight of the mass at the end. Therefore the string cannot be horizontal.
*Thursday, November 15, 2007 at 11:07pm by drwls*

**physics**

m1=mass of monkey=24kg m2=mass of package=35 kg Minimum tension in the rope, T = m2g If the monkey has an acceleration of a, then tension produced, T = m1(g+a) Thus m1(g+a) = m2*g Solve for a.
*Monday, September 28, 2009 at 8:02pm by MathMate*

**physics**

Consider the 59 N weight held by two cables The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N.
*Friday, November 7, 2008 at 8:43pm by Greg*

**physics**

Consider the 59 N weight held by two cables The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N.
*Friday, November 7, 2008 at 8:51pm by Greg*

**Physics**

A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 220N and breaks as the elevator accelerates. What was the elevator's minimum acceleration (magnintude and direction)? Please show me how to do this in addition to ...
*Tuesday, January 2, 2007 at 9:14pm by Kelly*

**physics**

A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.6 m/s2. (a) If the tension in the cord is 54 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.6 m/s2?
*Tuesday, October 4, 2011 at 8:47pm by Rebekah*

**Physics**

A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.9 m/s2. a) If the tension in the cord is 94 N, what is the lamp's mass? b)What is the cord's tension when the elevator ascends with an upward acceleration of 2.9 m/s2?
*Monday, October 8, 2012 at 5:08pm by Aalaa*

**Physics**

If you want to learn the subject and not just fill in the blanks to get some meaningless degree, use the fact that the frequency is proportional to (wave speed)/(string length) To keep the frequency the same, the wave speed must increase by a factor 37.8/29.3 = 1.2901 The ...
*Wednesday, January 27, 2010 at 10:56pm by drwls*

**physics**

A flag of mass 2.2 kg is supported by a single rope as shown in the figure below. A strong horizontal wind exerts a force of 10 N on the flag. Find the tension in the rope and the angle θ the rope makes with the horizontal. Tension = N θ = °
*Saturday, February 21, 2009 at 1:23am by kj*

**Physics**

A block of mass M=2 kg is swung on a rope in a veritcal circle(the direction of motion is vertical to the ground) of radius r. When the block is at the top of the circle, the tension in the rope is measured to be 10N. What is the tension in the rope when the block is at the ...
*Monday, November 16, 2009 at 10:38pm by Holly*

**Physics**

Drop in potential energy from horizontal to vertical orientation is 2 meters *m* g This must equal 1/2 m v^2, because velocity is zero when the rope is horizontal. This means that: v^2 = 4 meters*g ---> v^2/(2meters) = 2 g is the centripetal acceleration. Newton's second ...
*Sunday, November 18, 2007 at 5:55pm by Count Iblis*

**physics**

1. The passenger might be accelerating up or down. Just as in an elecator that is accelerating or decelerating, the apparent weight changes. 2. No, not the same. In this case the tension M V^2/R (which is the centripetal force) is inversely proportional to the string length, R...
*Wednesday, October 20, 2010 at 12:37am by drwls *

**Physics**

A particle P of mass 2kg is attached to one end of a light rod of length 0.5m which is free to rotate in a vertical plane about its other end.The particle describes complete circles, Given that the tension at the bottom is 5times the tension at the highest point, find spped of...
*Tuesday, March 12, 2013 at 10:02am by Lynn*

**physics**

2. A child throws his yoyo horizontally about his head rather than using it properly. The yoyo has a mass of 0.200 kg and is attached to a string 0.800 meters long. a. If the yoyo makes a complete revolution each second, what tension must exist in the string? b. If the tension...
*Sunday, May 1, 2011 at 8:29pm by sam*

**Physics**

A 0.21 kg ball on a string is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the tension is 18 N. -------------------------------------------------------------------------------- (a) How does the magnitude of the centripetal ...
*Friday, April 11, 2008 at 4:52am by Johnson*

**physics**

In the total tension, what does &radic mean? Total Tension, T = &radic(T²+(mg)^2) The angle tan-1(mg/Tc) is the angle with the horizotal
*Wednesday, October 7, 2009 at 12:19pm by Kalen*

**physics**

Vertical circle? At the top, tension has to equal the force of centripetal acceleration (minus weight) or Tension=mv^2/r -mg IF tension is zero, v= sqrt (rg) that is the minimum value. so if v = sqrt(rg), then the KE at the top is 1/2 m rg. the PE at the top is 2mgr So it ...
*Tuesday, August 11, 2009 at 10:35am by bobpursley*

**Physics**

If you lay a steel needle horizontally on water, it will float. If you place the needle vertically into the water, it will sink. Explain why. It is because of surface tension. The hydrogen molecules bond with the steel of the needle. Look up surface tension in wikipedia or ...
*Thursday, May 10, 2007 at 6:42pm by Anonymous*

**physics**

Centripetal force is w^2*m*radius you need to calculate the radius from the dimensions. Now, the component of force in each string can be found tension upper= w^2 *r * m * sintheta where theta is the upper angle of the string triangle, or sintheta= 4/5 tension lower you do it.
*Tuesday, December 9, 2008 at 4:26am by bobpursley*

**physics**

A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 930 and 1640 N, respectively. The acceleration of the cable is 0.620 m/s2, upward. (a) What is the tension in the cable below the worker? (b) What is the tension...
*Monday, February 15, 2010 at 10:57pm by tiffany*

**Physics**

A cable is lifting a construction worker and a crate, as the drawing shows. The weights of the worker and crate are 961 and 1540 N, respectively. The acceleration of the cable is 0.620 m/s2, upward. (a) What is the tension in the cable below the worker? (b) What is the tension...
*Monday, September 20, 2010 at 7:50pm by Sarah*

**physics**

Ignore the mass of the string in determining the period of the pendulum. Tension=5.39g massperunitlengthstring=.0789/L periodpendulum=2PI sqrt (L/g) solve for L, given pendulum. wavespeed= (from the law of string) wavespeed= sqrt (Tension/(mass/length))
*Monday, June 20, 2011 at 1:50pm by bobpursley*

**phsyics**

An elevator with a weight of 27.9 kN is given an upward acceleration of 1.46 m/s2 by a cable. (a) Calculate the tension in the cable. (b)What is the tension when the elevator is decelerating at the rate of 1.46 m/s2 but is still moving upward?
*Thursday, September 23, 2010 at 8:07pm by harrypotter*

**phsyics**

An elevator with a weight of 27.9 kN is given an upward acceleration of 1.46 m/s2 by a cable. (a) Calculate the tension in the cable. (b)What is the tension when the elevator is decelerating at the rate of 1.46 m/s2 but is still moving upward?
*Thursday, September 23, 2010 at 8:07pm by harrypotter*

**Physics**

There is a vertical tension at the top of a 4 m long ladder holding it at an incline. The bottom of the ladder is touching the floor, which exerts a normal force. You are standing 1 meter from the top of the ladder. What happens to the tension as you walk up the ladder? As you...
*Thursday, November 4, 2010 at 10:09pm by Gunther*

**physics**

A 800 kg steel beam is supported by two ropes. Each rope has a maximum sustained tension of 6600 N. One of the ropes is 20 degrees left of the horizontal(normal) while the other rope is 30 right of the horizontal(normal). What is the tension in each rope?
*Saturday, November 3, 2012 at 3:42pm by Yannan Huang*

**physics**

An aluminum wire of radius 3.10 10-4 m is stretched between the ends of 2 concrete blocks. When the system (wire and concrete) is at 35°C, the tension in the wire is 57.0 N. What is the tension in the wire when the system is heated to 185°C?
*Sunday, November 28, 2010 at 4:16pm by Ben*

**physics**

A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circle. Assume that the total energy of the ball-Earth system remains constant. (a) What is the tension in the string at the bottom? (Use the following ...
*Monday, March 18, 2013 at 1:10am by ahmad*

**Physics**

A ball whirls around in a vertical circle at the end of a string. The other end of the string is fixed at the center of the circle. Assume that the total energy of the ball-Earth system remains constant. (a) What is the tension in the string at the bottom? (Use the following ...
*Monday, October 21, 2013 at 6:01pm by matt*

**Re: Pig question (Physics)**

Thank you, I think I get it now. I have one more question: a kimchi container of mass 1=3.0 kg connected to a block of mass m2 by a cord looped around a frictionless pulley. The cord and pulley have negligible mass. When the container is released from rest, it accelerates at 1...
*Thursday, October 12, 2006 at 7:36pm by Amber*

**Physics**

A lamp hangs vertically from a cord in a descending elevator with a constant deceleration a. If the tension in the cord is T0, answer the following. (Use any variable or symbol stated above along with the following as necessary: g.) (a) What is the lamp's mass? m = (b) What is...
*Monday, February 11, 2013 at 10:13am by Rachel*

**Physics**

The horizontal compnents of the tension forces cancel. T1*sin25 -T2*sin15 = 0 The vertical components of the tension force add up to the weight. T1*cos25 + T2cos15 = 45 Solve those two simultaneous equations. T2 = 1.6329*T1 Substitute that in the second equation and solve for ...
*Friday, February 25, 2011 at 12:20am by drwls *

**Physics**

A solid cube (side=2.54 cm) of aluminum (p=2.70x10^3 kg/m^3) is attached to a vertical cord. (a) Find the tension in the cord if the cube is in air. (b) Find the tension in the cord if the cube is fully immersed in water (p=1.00x10^3 kg/m^3).
*Wednesday, April 24, 2013 at 11:33am by Lashawn*

**solid mechanics**

The normal stresses at a certain point in a body are 80MPa tension and 50Mpa compression. There are also shear stresses across the plane of tension and compression equal to 30MPa.Calculate the maximum direct stress and maximum shear stress in the material.
*Sunday, February 16, 2014 at 6:49pm by vishal*

**physics**

The flywheel of a motor is connected to the flywheel of an electric generator by a drive belt. The flywheels are of equal size each of radius . While the flywheels are rotating the tension in the upper and lower portions of the drive belt are and respectively. The drive belt ...
*Thursday, December 5, 2013 at 10:09am by Greco*

**physics**

Consider a 626N weight held by two cables. The left hand cable had tension T and makes an angle of theta with the wall. The right hand cable had tension 720N and makes an angle of 27 degrees with the ceiling. What is the tesion T in the left hand cable slanted at an angle of ...
*Thursday, July 14, 2011 at 5:09pm by alexa*

**Physics**

One boat tows another boat by means of a tow line, which is under a constant tension of 495 N. The boats move at a constant speed of 4.75 m/s. How much work is done by the tension in 1.10 min? Not sure how to apply the work-energy theorem. I assume velocity needs to be ...
*Monday, October 3, 2011 at 8:40pm by Help*

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