1. physics

    a 200 N wooden platform is suspended from the roof of the house by ropes attached to it's ends. it has a total length of 4.2 meters. a painter weighing 650 N stands from the left end of the platform. find the tension in each end of the ropes .
  2. physics101

    a 200 N wooden platform is suspended from the roof of the house by ropes attached to it's ends. it has a total length of 4.2 meters. a painter weighing 650 N stands from the left end of the platform. find the tension in each end of the ropes .
  3. physics

    A 4-m wooden platform weighing 160 N is suspended from the roof of a house by ropes attached to its ends. A painter weighing 640 N stands 1.2 m from the left-hand end of the platform. Find the tension in each of the ropes
  4. Physics

    A 3.0m wooden platform is suspended from the roof of a house by ropes attached to its end. A painter whose mass 80kg stands 1.2m from the left-hand end of the platform, whose own mass is 18kg. Find the tension in each rope.
  5. Physics

    A house painter is standing on a uniform, horizontal platform that is held in equilibrium by two cables attached to supports on the roof. The painter has a mass of 75 kg and the mass of the platform is 20.0 kg. The distance from the left end of the
  6. Physics

    A 70 kg person stands on a 30 kg platform and pulls on a massless rope with a force of 400 N. The rope passes around a pulley attached to a support (roof), and then around a second pulley attached to the platform before being anchored to the support
  7. physics

    Two construction workers each of mass m raise themselves on a hanging platform using pulleys as shown above. If the platform has a mass of 0.5m, the initial distance between the pulleys and the platform is d, and the workers each pull with a force f on the
  8. physics

    two ropes are attached to a 200. kg sled. A 490. newton dog attached to on eo the ropes applies a force of 300. N b north of the rope. A 35.0 kg dog attached to the second rope applies a force of 125 N b 36.9 degrees south of west to the rope. Calculate
  9. physics

    A 45 m/s (100 mph) wind blows across the top of a flat-roofed house. Calculate the net force on the roof due to the pressure differential from inside the house to the outside. Assume that the pressure in the house is atmospheric pressure and that the roof
  10. College Physics

    A wooden bridge crossing a canyon consists of a plank with length density λ = 2.25 kg/m suspended at h = 10.89 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank,
  11. Physics

    A wooden bridge crossing a canyon consists of a plank with length density λ = 2 kg/m suspended at h = 10.0 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as
  12. Algebra

    Jen is building a doll house for her daughter. She decided that she wanted the slope of the roof to be 3/4. In the blueprint, the roof starts at (-6,10) and the center of the house is at (0,0). Knowing that the peak of the roof will be at (0,y), what
  13. vectors and physics

    A 40 kg weight is suspended at P which is held up By the ropes PQ and PR the ropes make angles at 160 degrees and 130 degrees respectively with the vertical, find the tension in the ropes
  14. math

    Malcom designed the roof plan of a house and implement shed. The dimensions of the house's roof are 25 ft wide by 40 long. The length of the shed's roof is 140 feet. If the two shapes are similar, what is the width of the shed's roof?
  15. Circular Motion Physics

    A coin with mass 3.1 grams is at rest atop a wooden block of mass 20 grams. The block is on a spinning platform with a 12 centimeter radius. The coefficients of friction between the platform and the wooden block are μs = 0.75 and μk = 0.64 The
  16. trigonometry

    A carpenter is building a house. He is constructing the roof. The roof has an angle of elevation of 40° from the horizontal. The height he wants to make the roof is 18 feet. How far is it from the bottom edge of the roof to the top of the roof? (Find the
  17. physics

    two boys trying to move a 200 kg cement block pull on two ropes attached to the block the tension in the ropes are 400N and 300N while the angle between them is 50°. sketch a vector triangle showing and naming the two forces exerted by the boys as well as
  18. physics

    A 70 kg painter is painting the wall of a building. He stands on a horizontal board of length 4.7 m and mass 15 kg, suspended from vertical ropes attached to each end. If the painter stands 2.0 m from one end of the board, what would the tensions in the
  19. physics

    A 40-N box is suspended in the ceilingusing two ropes . Each ropes makes an angle of 45° with the vertical . How much is the tension in each rope?
  20. engineering

    . A platform with boat weighs 10,000 N. Four cables are attached to the platform as shown; the edges of the platform are always a horizontal distance of 2 m from the pulleys. As the platform rises smoothly and evenly, the length L of the cables decreases
  21. Physical Science

    two people pull on separate ropes attached to a cart. the angle between the ropes is 90 degrees and one person pulls with a force of 200 newtons while the other pulls with a fore of 400 newtons. find the resultant force and direction using the
  22. physics

    Three people attempt to haul a heavy sign to the roof of a building by using three ropes attached to the sign. Abby stands directly above the sign and pulls straight up on a rope. Eric and Kim stand on either side of Abby. Their ropes form 30.0 degree
  23. physics

    A basket weighing 0.3kg is suspended from two ropes which are tied to a horizontal beam. The rope on the left is at an angle of 63° and the rope on the right is at an angle of 32° with respect to the beam. What mass of rocks could be placed in the bucket
  24. English

    1. Step onto the wooden platform in this classroom. 2. Walk toward the raised platform to introduce yourself. 3. Step to the platform and recite the whold sentences in the passage. 4. Come onto the podium and intorduce yourself inclucing your school life.
  25. physics

    Q. A 200 kg load is suspended by a cable from a crane . Two ropes are attached to the load , acting at 90 deg to each other. One rope exerts a pull of 220 N , at 10 deg below horizontal, the other rope exerts a force of 360 N at 15 deg below horizontal.
  26. Physic

    Can some one help me with this question. A uniform 119.0 cm long, 78.0 gram wooden rod is suspended from it midpoint. On one end of the rod, a mass of 350 g is attached, and on the other end a mass of 150 g is attached. A third mass of 225 g is attached at
  27. Physics

    A 40.0kg child is in a swing that is attached to ropes 2.00m long. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions: a) When the ropes are horizontal b) When the ropes
  28. physics

    A 39.5 N child is in a swing that is attached to ropes 2.01 What is the gravitational potential energy when the ropes make a 32.1° angle with the vertical?
  29. Physics

    A 4kg wooden block is placed on a wooden table, so the coeficent of friction would be 0.2. There is a string connected to both sides of the wooden block with a pulley system at the end of the table to go off and then each string has a different weight
  30. physics

    a 650 lb box is hanging by means of two ropes attached to a ceiling as shown by diagram below find the tension on the ropes
  31. physics

    A 120 N child is in a swing that is attached to ropes 2.20 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal (b) when the ropes make a
  32. physics

    Find the pressure exerted by a solid,when placed on a wooden platform.The area of contact is 200 cm and the solid weight 150 N?
  33. Physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 42 ∘. The gravitational acceleration is
  34. physics

    two ropes attached to I beam (mass 500 kg). ropes make angles of 60 degrees with horizontal. Determine tension in each rope
  35. math

    what's the slope of the roof on adobe house?why might a roof in connecticut be steeper than a roof in the desert?
  36. honors geometry

    You and a group of friends are participating in a ropes course. One of the obstacles involves doing a Tarzan Swing into a lake. A rope swing is at the edge of the lake. It is attached to a platform arm that overhangs the lake as shown in the diagram below.
  37. URGENT

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 37 ∘. The gravitational acceleration is
  38. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 45 ∘. The gravitational acceleration is
  39. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  40. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  41. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  42. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  43. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  44. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  45. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  46. Physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  47. PHYSICS

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  48. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  49. physics(help)

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  50. physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  51. physics(*URGENT*)

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  52. Math

    Sammy has a 10-foot ladder, which he needs to climb to reach the roof of his house. The roof is 12 feet above the ground. The base of the ladder must be at least 1.5 feet from the base of the house. How far is it from the top of the ladder to the edge of
  53. physics (it's rather urgent help is appreciated

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is
  54. physics

    two ropes attached to I beam (mass 500 kg). ropes make angles of 60 degrees with horizontal. Determine tension in each rope. I ended up with 2829 N for each. Correct? or could you explain more?
  55. Physics Energy and Work Done

    A 390-N child is in a swing that is attached to a pair of ropes 1.9 m long. Find the gravitational potential energy (in JOULES) of the child–Earth system relative to the child's lowest position at the following times. A) when the ropes are horizontal B)
  56. Physics

    A 50- kg child sits in a swing suspended with 3.8- m-long ropes. The swing is held aside so that the ropes make an angle of 48 o with the vertical. Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is
  57. PHYSICS PLEASE HELP

    A 80- kg child sits in a swing suspended with 2.6- m-long ropes. The swing is held aside so that the ropes make an angle of 46 o with the vertical. Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is
  58. Physics PLEASE HELP

    A 80- kg child sits in a swing suspended with 2.6- m-long ropes. The swing is held aside so that the ropes make an angle of 46 o with the vertical. Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is
  59. physics

    A rotating platform is on a table and an object is on the platform. The platform has a diameter of 30.0cm and it has a string wrapped around it. The string is threaded over a pulley ( which is right next to the platform and attached to the edge of the
  60. Physics

    A 59-kg housepainter stands on a 16-kg aluminum platform. The platform is attached to a rope that passes through an overhead pulley, which allows the painter to raise herself and the platform. (Ignore the mass of the pulley and any friction in the pulley.)
  61. Physics- Mechanics

    A 33.5 kg person stands on a 67 kg platform. He pulls on the rope that is attached to the platform via the frictionless lower-right pul- ley. He pulls the rope at an angle of 35◦ to the horizontal, as shown in the figure below. Assume: g = 9.8 m/s2 .
  62. physics

    A 48.4 N child is in a swing that is attached to ropes 1.24 m long. Find the gravitational potential energy associated with the child relative to her lowest position when (a) the ropes are horizontal
  63. Physics

    A 40 kg child sits in a swing suspended with 2.5 m long ropes. The swing is held aside so that the ropes make an angle of 15 degrees with the vertical. Use the conservation of mechanical energy to determine the speed the child will have at the bottom of
  64. Physics (Help please)

    A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m.
  65. Mata

    Te slope of the roof is 2/3. If the width of the house is 78 feet,what is the height of the roof, in feet? Assume the roof creates an isósceles triangle
  66. physics

    A 2 gram bullet traveling at 1500 m/s [East] hits a 200 g block of wood at rest, and becomes embedded in it. If the block is suspended by long ropes, how high will it travel before it comes to rest?
  67. College Physics

    A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m.
  68. physics

    Two horses pull horizontally on ropes attached to a tree stump (Fig. 3). Each horse pulls with a force of magnitude F. If the angle between the two ropes is 126O, what is the resultant force?
  69. physics

    A 100-N child is in a swing that is attached to ropes 1.90 m long. Find the gravitational potential energy (b) when the ropes make a 35.0° angle with the vertical c) when the child is at the bottom of the circular arc
  70. Physics

    The roof of a two-story house makes an angle of 29° with the horizontal. A ball rolling down the roof rolls off the edge at a speed of 4.5 m/s. The distance to the ground from that point is 8.2 m. (a) How long is the ball in the air? (b) How far from the
  71. Advanced Physics

    If wind blows at a speed of 30 m/s over the roof of your house, what is the pressure diference on your roof between the air inside and the air outside? What net force does this produce on a roof having an area of 175 m^2? 1.3 kg/m^3 is the density of air.
  72. Physics

    A400 N child is swing that is attached tow ropes 2m long , find the gravitational potential energy of the child-earth system relative to the red line level when ropes make an angle with the vertical .
  73. Calculus

    A 400 N object is hanging from two ropes that are suspended from the ceiling. One of the ropes forms a 60° angle with the ceiling and has a tension of 400 N. Calculate the tension in the second rope
  74. Physics

    A platform that rolls on wheels and has inertia mp is attached to a wall by a horizontal spring of spring constant k. A load of inertia ml sits on the platform, and the coefficient of static friction between platform and load is μs. If you pull the
  75. Calculus- Vectors

    I've come across this math problem and need help on working it out. Ropes 3 m and 5 m in length are fastened to a holiday decoration that is suspended over a town square. The decoration has a mass of 5 kg. The ropes, fastened at different heights, make
  76. physics

    (a)If the wind blows at 30m/s over the roof of your house, what is the pressure difference at the roof between the inside and outside air (b) What net force does this pressure difference produce on a roof having an area of 175m^2? I have no clue how to
  77. physics! center of mass

    a long non uniform board of length 8 m and mass m = 12 kg is suspended by two ropes if the tensions in the ropes are mg/3 (on left) and 2mg/3 (on right) what is the location of the board's center of mass thank you!
  78. physics! center of mass

    a long non uniform board of length 8 m and mass m = 12 kg is suspended by two ropes if the tensions in the ropes are mg/3 (on left) and 2mg/3 (on right) what is the location of the board's center of mass thank you!
  79. Physics

    two students are attempting to lift a sign to the top of a tall building, each is pulling equally with 100 newtons of force, on the two ropes. The ropes are attached to opposit corners of the sign, and the angle between them is 60. compute the resultant
  80. Physical Science ASAP

    A child weighing 200 newtons is sitting in the center of a swing. the swing is supported evenly by two ropes, one on each side. what is the tension force in one of the ropes?
  81. Physics

    A 350 N child is in a swing that is attached to a 7.50 m long rope. find the gravitational potential energy associated with the child relative to her lowest position when a) the ropes are horizontal, (b) the ropes make a 30 degree angle with the vertical,
  82. trigonometry

    to unload hollow blocks from the cargo truck a wooden plank whose end rests against the truck's platform 1.5 meters above the ground is used. if it is inclined 37%49 with the ground, how long is the wooden plank?
  83. maths

    2. A bar of uniform section is 81.4cm long and weighs 4.45 kg. A weight of 12.8 kg is suspended from one end. The bar weight combination is to be suspended from a cable attached at the balance point. a)Determine how far from the weight should the cable be
  84. Math

    A roofing crew can roof a house in 10 hours. If a second crew was added, the job would take 6 hours. How long would it take the second crew to roof the house alone?
  85. Physics

    Two people pull as hard as they can on ropes attached to a boat of mass 200 kg. If they pull in the same direction, the boat has an acceleration of 4 m/s^2. what is the force exerted by each person on the boat? Disregard any other forces on the boat.
  86. Physics

    "A workman sitting on top of a roof of a house drops his hammer. The roof is smooth and slopes at an angle of 30.0 degrees to the horizon. It is 32m long and its lowest point is 32m from the ground. How far from the house's wall is the hammer when it hits
  87. Physics

    A 1.40- block is on a frictionless, 20 inclined plane. The block is attached to a spring ( = 40.0 ) that is fixed to a wall at the bottom of the incline. A light string attached to the block runs over a frictionless pulley to a 60.0- suspended mass. The
  88. math algebra

    Gray Glaze requires 15 hours to put a new roof on a house. His apprentice, Anna Gandy, can record the house by herself in 20 hours. After working alone on a roof for 6 hours, Gary leaves for another job. Anna takes over and completes the job. How long does
  89. physics

    A large building has an inclined roof. The length of the roof is 69.5 m and the angle of the roof is 18.0° below horizontal. A worker on the roof lets go of a hammer from the peak of the roof. Starting from rest, it slides down the entire length of the
  90. Southern Union

    A large building has an inclined roof. The length of the roof is 64.0 m and the angle of the roof is 20.0° below horizontal. A worker on the roof lets go of a hammer from the peak of the roof. Starting from rest, it slides down the entire length of the
  91. physics

    at on time, the velocity of a rifle bullet was measured using a ballistic pendulum made up of a wooden block suspended from a string. the block used here has a mass of 20kg. a 50g rifle bullet is fired into the block, penetrating it by 10cm and causing it
  92. physics

    A 43 N toy is placed in a light swing that is attached to ropes 1.7 m long. (a) Find the gravitational potential energy associated with the toy relative to its lowest position when the ropes are horizontal. J (b) Find the gravitational potential energy
  93. physics

    Two ropes are attached to a skater as sketched in the figure below and exert forces on her as shown. Find the magnitude and direction of the total force exerted by the ropes on the skater if θ1 = 32.0° and θ2 = 53.0°. what is the magnitude and
  94. Physics

    A 4kg box is attached to a 2.4m rope rotating on platform. Max tension can withstand without breaking is 140N. 1.) Find Max. speed w/ which the box can rotate if the surface of platform is frictionless. 2.) Find Max speed w/ which box can rotate if Coeff.
  95. math

    the roof of a house rises 3 feet vartically for every 5 feet it runs horizontally. what is the slope of the roof?
  96. science

    The average solar radiation incident on the surface of the earth is about 1 KW/m2 for the entire year. A solar house is built with solar panels installed in the roof to provide the heating and electrical energy of the house. If the roof has a surface area
  97. PHYSICS

    The three ropes in the figure are tied to a small, very light ring. Two of the ropes are anchored to walls at right angles, and the third rope pulls as shown, with T3 = 90 N and θ = 35°. What are T1 and T2, the magnitudes of the tension forces in the
  98. Physics

    Young acrobats are standing still on a circular horizontal platform suspended at the center. The origin of the two-dimensional Cartesian coordinate system is assumed to be at the center of the platform. A 30-kg acrobat is located at (4 m, 9 m), and a 36-kg
  99. physics

    Uniform rod of weight 10N and length 5m is supported by ropes from points P and Q. The rope at P is attached 1.0m from end M and the rope at Q is attached 0.25m from end O. find the tensions Tp and Tq
  100. Math

    A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr. Is the air pressure above the roof higher or lower than the pressure inside the house? Explain. Need help