7) Suppose you use an ideal pulley of the type shown in the figure below and find it necessary to exert a force of 240 N to support a load. MA-3 (a) What is the load's mass (in kg)? kg (b)What force (in N) is exerted on the ceiling? Neglect the pulley system's mass. N (upward)
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- A worker is using a 4.0 m long steel bar as a lever to raise one side of a car off the road. The fulcrum is a large block of wood. The magnitude of the load force is $200 N. If the load arm is 0.40 m, calculate the magnitude of the effort force required to balance the load.Three bamboo poles anchored at points B, C, and D on the ground supports the TV antenna placed at their other end at Point A. The TV antenna with a negligible weight is subjected to a wind load equivalent to a force in the component form shown in the figure. Y (-45î + 45K)N (0,8,0) A B (-6,0,2.4) (0,0,0) C D (0,0,-12) (8,0,4) *(a) What is the mechanical advantage of a nail puller--similar to the one shown in Figure 5.15--where you exert a force 40.0 cm from the pivot and the nail is 1.80 cm on the other side?(b) What minimum force must you exert to apply a force of 1200 N to the nail?N
- a) For each of the weightless and frictionless pulley systems (a) to (e) in Figure Q5a: Determine the tension (T) required to lift and hold a 1450 N crate in static equilibrium for each of the pulley systems (a) to (e). Use g = 9.81 m/s2 and give your answers in newtons (N) to two decimal places. (i) Determine the ideal mechanical advantage (IMAPulley) for each of the pulley systems (a) to (e). (ii) (iii) Determine the reaction force where the pulley wheel is connected to the ceiling for each of the pulley systems (a) to (e). Use g = 9.81 m/s² and give your answers in newtons (N) to two decimal places. (a) (b) T (c) T (d) T (e) TThree bamboo poles anchored at points B, C, and D on the ground supports the TV antenna placed at their other end at Point A. The TV antenna with a negligible weight is subjected to a wind load equivalent to a force in the component form shown in the figure. Y (-45î + 45K)N (0,8,0) A B (-6,0,2.4) (0,0,0) C D (0,0,-12) (8,0,4) *Only need some help with Part i, Part ii, Part iii
- A uniform beam of length L = 7.70 m and weight 4.75 ✕ 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.Question 4 pleaseLearning material says that the answer is Ff = 244.29 N, but it didn't show how to get that answer. Other answers found on this site say it's 1646.45 N. Which one is the wrong answer? How is it wrong? Please enlighten me. Thank you.