Physics
posted by Mary
Two people pull a mule. One with 120 Newtons and an angle of 60 degrees. The other with 80 N and an angle of 105 degrees (Q2). What would be the force a third person would have to exert on the mule to make the net force equal to zero.

drwls
Do a vector addition that says that the sum of the first two forces and the unknown third force is zero. You will end up with equations for the x and y components of the unknown frce

Henry
120[60] + 80[105] + F3 = 0.
39.3 + 181.2i + F3 = 0.
F3 = 39.3  181.2i(Q3).
Tan A = (181.20/(39.3) = 4.61069.
A = 77.8o S. of W. = 257.8o CCW.
F3 = (181.2)/sin257.8 = 185.4N.[257.8]. 
Henry
Or
F1 + F2 = 39.3 + 181.2i = 185.4N.[77.8o]
F3 = F1+F2, But 180o out of phase:
F3 = 185.4[77.8+180) = 185.4N.[257.8].
Respond to this Question
Similar Questions

CalcBased Physics
Two people are pulling a mule. One is pulling at 120 N* at 60 degrees, and the other is pulling at 80 N* at 105 degrees. Find: a) The single force that is equivalent to the forces shown. AND b) The force that a third person would have … 
physic
Hi!Question:The helicopter view in the fiure below shows two people pulling on a stubborn mule. Asume that F1 is 110N, and F2 si 70N. The forces are measured in units of newtons(N). a.Find the single force that is equivalent to the … 
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 … 
Physics
The helicopter view in the figure below shows two people pulling on a stubborn mule. Assume that F1 is 130 N, and F2 is 65 N. The forces are measured in units of newtons (N). (a) Find the single force that is equivalent to the two … 
physics
. Two people pull on a stubborn mule, as seen from a helicopter in Figure 2.1. Find (a) the single force that is equivalent to the two forces shown, and (b) the force that a third person would have to exert on the mule to make the … 
physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of 40 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = 3 / ã 3 . If … 
physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = n2 / ã 3 . If … 
physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = n2 / ã 3 . If … 
physics
three forces act on a ring. The net force on the ring is zero. One force is at an angle of 30 degrees with a magnitude of n1 Newtons. A second force F acts at an angle theta . The tangent of the angle is tan theta = 3 / 1.73 . If the … 
Physics
Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in the figure to pull it out. (a) What force in newtons would you have to exert perpendicular to the center of a rope to produce a force of 10,000 …