an object weighing 65N is helf up on the air by two ropes. the first rope points uo to the right 30 degrees aboe horizontal and the other rope points up to the left at 45 degrees above horizontal. what is the tension in the two ropes?
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- A block of weight w is suspended from a rope tied to two other ropes at point O. One rope ishorizontally attached to a wall and the other is fastened to the ceiling. The angle betweenceiling and the rope is 60°. What are the tensions in each of the ropes? Assume the weights ofthe ropes and the knots are negligible. If the weight of the block is 100 N, what is the tension inthe ceiling rope?While digging a small hole prior to planting a tree, a homeowner encounters rocks. If he exerts a horizontal 239-N force on the prybar as shown, what is the horizontal force exerted on rock C? Note that a small ledge on rock C supports a vertical force reaction there. Neglect friction at B. Complete solutions (a) including and (b) excluding the weight of the 17-kg prybar. A 239 N 1550 mm 16° B 230 mm Answers: (a) Including weight, Fc- i (a) Excluding weight, Fe- i N(a) Calculate the tension (in N) in a vertical strand of spiderweb if a spider of mass 5.00 x 10¯º kg hangs motionless on it. (Enter a number.) N (b) Calculate the tension (in N) in a horizontal strand of spiderweb if the same spider sits motionless in the middle of it much like the tightrope walker in the figure. 5.0° 5.0° T. w T. TR The strand sags at an angle of 12.0° below the horizontal. (Enter a number.) N Compare this with the tension in the rtical strand (find their ratio). (Enter a number.) (tension in horizontal strand) / (tension in vertical strand)
- necinons Deter mine the required weight o block A so that block B will impend upuord, assuming 47N Force ats perperdiular to block A. the weight F the block B is 547 N the coeppicient of triction between block A and the wall, as well as block B and the inclined Hloor is ay and rope. the Floor rs indlined at 470 witha respect to the horizortal plare. whereas 0-25 for the Fixed anom B417N 구나구N 47° 2/2Two cables uith known tensions as attatched to a pole at point A. Determine the resu/tant force to wich the pole is subjected. shown are A TAC 6OON TAB 140° BA painter stands on a scaffold hung by its ends from two vertical ropes A and P, 6 m apart. The scaffold weighs 200 N. The tension in A is 750 N and that in Pis 200 N. a) What is the weight of the painter? b) How far from A is he standing?
- A 1.5 kg block resting ina rough flat surface is pulled by a string. The string makes an angle of 20 degress with the horizontal. The coefficient of static friction between the blodk and the surface is 0.35. What is the maximum tension in the string to keep the block unmoved?Three forces act concurrrently on a body. Force A has a magnitude of 200 N and points 50o N of W; force B has a magnitude of 100 N and points 30o E of N and force C has a magnitude of 300 N and points 40o W of S. What is the magnitude and direction of the resultant R = A - 2B - C?You are climbing on a hill that is inclined at 22º with the horizontal and you wish tobuild a rope tow to pull yourself up. Ignoring friction, calculate the tension you needed on therope to give your body that has a mass of 55kg a 1.2m/s^2 acceleration. What if you are toconsider the friction of 150N, what is the value the tension and coefficient of friction?
- A 16-year-old employee working for Southern Virginia College's (SVC) bookstore during the summer months is helping prepare for Fall salesIt's a good way to make extra money, and the teen is saving for a car. Books from one supplier are shipped to the SVC bookstore in large crates equipped with rope handles on all sides. On one occasion, the teen momentarily pulled with a force of 669 N at an angle of 35.3above the horizontal to accelerate a 124-kg crate of books. The coefficient of friction between the crates and the vinyl floor is 0.588. Determine the acceleration experienced by the crate in m / (s ^ 2) Use the approximation g = 10; m / (s ^ 2)(a) Calculate the tension (in N) in a vertical strand of spiderweb if a spider of mass 7.00 x 105 kg hangs motionless on it. (Enter a number.) N (b) Calculate the tension (in N) in a horizontal strand of spiderweb if the same spider sits motionless in the middle of it much like the tightrope walker in the figure. 5.0° 5,0° T. TR T I Ta w The strand sags at an angle of 12.0° below the horizontal. (Enter a number.) N Compare this with the tension in the vertical strand (find their ratio). (Enter a number.) (tension in horizontal strand)/(tension in vertical strand) =A 53 kg gymnast hangs vertically from a pair of parallel rings. If the ropes are supported so that they make an angle of 36 ∘ with the ceiling, what is the tension in each rope?