e line of action of the stand-alone resultant force R. The couple is positive if countercl 2350 Ib 4.9' 1070 Ib •A B. 31 Co 2.4 D E 2.4' 700 Jh
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- (a) Calculate the force needed to bring a 950-kg car to rest from a speed of 90.0 km/h in a distance of 120 m (a fairly typical distance for a non-panic stop). (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car and compare it with the force found in part (a).Replace the three forces shown by an equivalent force-couple system at point A. If the forces are replaced by a single resultant force, determine the distance d below point A to its line of action. 130 N 410 mm 410 mm 110 N 410 mm 250 N Answers: Force-couple system at A. The force is positive if to the right, and the couple is positive if counterclockwise. R = i M = i N•m Single resultant force. d = i mmReplace the three forces shown by an equivalent force-couple system at point A. If the forces are replaced by a single resultant force, determine the distance d below point A to its line of action. 140 N 760 mm 760 mm 130 N 760 mm 245 N Answers: Force-couple system at A. The force is positive if to the right, and the couple is positive if counterclockwise. R = i N M = i N•m Single resultant force. d = i mm
- •40 The potential energy of a diatomic molecule (a two-atom system like H2 or O2) is given by B r12 where r is the separation of the two atoms of the molecule and A and B are positive constants. This potential energy is associated with the force that binds the two atoms together. (a) Find the equilib- rium separation-that is, the distance between the atoms at which the force on each atom is zero. Is the force repulsive (the atoms are pushed apart) or attractive (they are pulled together) if their separa- tion is (b) smaller and (c) larger than the equilibrium separation?alfa ll a 0: 44 I 12:49 MENG250 - Assig... 4/10 •2–33. If F, = 600 N and $ = 30°, determine the magnitude of the resultant force acting on the eyebolt and its direction measured clockwise from the positive x axis. 60° F = 500 N F = 450 NDetermine the force P required to move the plate at a constant speed of 3 mm/s.
- Replace the three forces shown by an equivalent force-couple system at point A. If the forces are replaced by a single resultant force, determine the distance d below point A to its line of action. 150 N 710 mm 710 mm 710 mm 320 N Answers: Force-couple system at A. The force is positive if to the right, and the couple is positive if counterclockwise. R= i N M = i Single resultant force. d = i 250 N N•m mmIn (Figure 1), F = {500i - 300j + 400k} N. Figure 2m B 1m 1 m 6 m C 3m 1 of 1 Part A Determine the magnitude of the projection of the force F acting along the cable CA. Express your answer to three significant figures and include the appropriate units. C'H FonCA = Submit Provide Feedback μA Value Request Answer Units ? Next >DOT PRODUCT ● • Three dogs are pulling on a stick in different directions. The first dog pulls with force F1 = (10.01 - 20.4ĵ+ 2.0K)N, the second dog pulls with force F2 = (-15.01 - 6.2K)N, and the third dog pulls with force F3 = (5.02 + 12.5ĵ)N. What is the angle between forces F1 and F2?
- Question 4 For the given truss, calculate the reactions at each support. • F = 100 • F3 = 350 • 12 = 4 • F2 = 200 • x1 = 5 • y = 10 A D F, *,- |-t-– x,- |time = 0 time = t -10 kinetic friction A block slides on a horizontal plane. The initial speed is vo = 2.5 m/s. - V The block slows down because of friction; the coefficient of kinetic friction is 0.100. At time t the speed is vo/2. What is t? (in s) OA: 1.089 OB: 1.274 OC: 1.491 OD: 1.744 OE: 2.041 OF: 2.388 OG: 2.794 OH: 3.269how far should you separate two particles which have 5 nC and 16 nC in order to have a force of 5.0x10-4 N?