Thursday
December 18, 2014

Posts by henry


Total # Posts: 9,752

Math 222
1. g^2 - 6g - 55 = 0 -55 = 1*(-55) = 5*(-11) Choose the pair of factors whose sum = B : 5, and -11. (g+5)(g-11) = 0 g+5 = 0 g = -5. g-11 = 0 g = 11. Solution: g = -5, and 11. 2. k^3 + k = 0 k(k^2+1) = 0 k = 0 k^2 + 1 = 0 k^2 = -1 k = sqrt(-1) = I Solution: k = 0, and i. 3. k^2...
October 23, 2014

Algebra
Cannot be factored. Use Quadratic Formula and get: X1 = -737.1. X2 = 122.1.
October 23, 2014

Physics
Vo = 1560 m/s @ 67.4o Range = Vo^2*sin(2A)/g = 1560^2*sin(134.8)/9.8 = 176,205 m. Range = Vo*cos67.4*T = 176,205 T = 176,205/1560*cos67.4 = 294 s. in flight.
October 23, 2014

math
d = 110 - 30t = 40. Solve for t.
October 23, 2014

physics
Vo = 12.8 m/s @ 33.5o Yo = 12.8*sin33.5 = 7.06 m/s. Tr = -(Yo)/g = -7.06/-9.8 = 0.721 s. = Rise time. Tf1 = Tr = 0.721 s. = Fall time from max ht. to top of building. Tr+Tf1+Tf2 = 3.4 s. 0.721 + 0.721 + Tf2 = 3.4 Tf2 = 3.4 - 1.44 = 1.96 s. = Fall time from top of building to ...
October 23, 2014

physics
West = 340*Cos20 = 319.5 km. North = 340*sin20 = 116.3 km.
October 23, 2014

accounting
Po = $9800, r = 0.02, t = 15yrs. I = Po*r*t
October 23, 2014

Physics
h = ho + -(Vo^2)/2g h = 744 + -(15.5^2)/-19.6 = 756.3 m
October 23, 2014

physics
a. F1 = 6N @ 0o, F2 = 6N @ 60o. X = 6 + 6*Cos60 = 9.0 N. Y = 0 + 4*sin60 = 3.46 N. F1+F2 = X+Yi = 9 + 3.46i Fr = 9 + 3.46i + 4 = 13 + 3.46i = 13.5 N @ 14.9o
October 23, 2014

Physics Mechanics
F(x) = 30 - 10x = 0 10x = 30 X = 3 Meters.
October 23, 2014

Physics
Work = F*d = 6.7 J. F * 0.044 = 6.7 F = 152.3 N F/(0.038+0.044) = 152.3/0.044 F/0.082 = 3461.36 F = 283.83 N. Work = F*d = 283.83 * 0.082 = 23.3 J. 23.3 - 6.7 = 16.6 J.
October 23, 2014

Physics
u = a/g a = u*g = 0.53*(-9.8) = -5.194 m/s^2 V^2 = Vo^2 + 2a*d = 0 Vo^2 = 2*5.194*11 = 114.3 Vo = 10.7 m/s.
October 22, 2014

physic
Vo = 25m/s @ 35o Xo = 25*cos35 = 20.48 m/s. Dx = Xo*t = 38 m. t = 38/Xo = 38/20.48 = 1.86 s.
October 22, 2014

Business Math
P = Po + Po*r*t P = 8,500 + 8500*(0.06/360)*40 - 2000 = $8556.67 - 2000 = $6556.67 After 40 days. P = 6556.67 + 6556.67*(0.06/360)*70 - 2000 = 6633.16 - 2000 = 4633.16 After 70 days. P = 4633.16 + 4633.16*(.0/360)*(180-110)= $4687.21 After 180 days.
October 22, 2014

Finance
C = Co + Co*r*t = 1400 Gigabytes. Co + Co*0.15*5 = 1400 Co + 0.75Co = 1400 1.75Co = 1400 Co = 800 Gigabytes = Today's capacity.
October 22, 2014

Math
5 - 2x - 1 = x+2 4-2x = x + 2 -2x-x = 2 - 4 -3x = -2 X = -2/-3 = 2/3 Your method: Multiply each term on both sides by 12: 12(5-2x-1) = 12(x+2) 60 - 24x - 12 = 12x + 24 48-24x = 12x + 24 -24x - 12x = 24 - 48 -36x = -24 X = -24/-36 = 24/36 = 2/3. Note: I don't know why you ...
October 22, 2014

physics
Vo = 110km/h = 110000m/3600s = 30.56 m/s V^2 = Vo^2 + 2a*d = 0 a = -(Vo^2)/2d = -(30.56^2)/200 = -4.67 m/s^2. F = m*a = 3.6*10^5 * (-4.67) = -1.68*10^6 N. Note: The negative sign means that the force opposes the motion.
October 22, 2014

Physics
X = 810 m/s^2 Y = 910 m/s^2 m = 0.32 kg F = ? a^2 = X^2 + Y^2 = 810^2 + 910^2 = 1,484,200 a = 1218 m/s2. F = m*a = 0.32 * 1218 = 390 N
October 22, 2014

physics
Vo = 0 V = 33.9 m/s. t = 6.02 s. m = 1640 kg F = ? a = (V-Vo)/t = (33.9-0)/6.02 = 5.63 m/s^2. F = m*a = 1640 * 5.63 = 9235 N.
October 22, 2014

Physics
Vo = 29.2m/s @ 46.9o Xo = 29.2*Cos46.9 = 20.0 m/s. Yo = 29.2*sin46.9 = 21.32 m/s. V = Xo + Yi = 20 + 0i = 20 m/s @ h max. KE = 0.5m*V^2 = 0.5*19.4*20^2 = 3880 J.
October 21, 2014

physics... PLEASE HELP
L = V/F = Wavelength in meters.
October 21, 2014

physics
Vo = 75.2m/s @ 47o Xo = 75.2*cos47 = 51.3 m/s. Yo = 75.2*sin47 = 55.0 m/s. h = 520 m a. Yo*t + 0.5g*t^2 = 520 m. -55*t + 4.9*t^2 = 520 4.9t^2 - 55t -520 = 0 Use Quadratic formula. Tf = 17.34 s. = Fall time. Dx = Xo*Tf = 51.3m/s * 17.34s = 890 m b. Y = Yo + g*t = -55 + 9.8*17....
October 21, 2014

physics... PLEASE HELP
L = V/F
October 21, 2014

Physics
Vo = 4.35 m/s. g = -1.62 m/s^2 V^2 = Vo^2 + 2g*h. = 0 @ h max. h = -(Vo^2)/2g
October 21, 2014

physics
Xo = 35 m/s. h = 1.5 m. h = 0.5g*t^2 = 1.5 m. 4.9t^2 = 1.5 t^2 = 0.306 Tf = 0.553 s. = Fall time. Dx = Xo*Tf = 35m/s * 0.553s = 19.4 m.
October 21, 2014

Physics
1. V^2 = Vo^2 + 2g*h = 0 + 19.6*10 = 196 V = 14 m/s. KE = 0.5m*V^2 = 980 J. 0.5M*196 = 980 M = 980/(0.5*196) = 10 kg. 2. PE = mg*h = 9.8*1 = 9.8 J. At top of inclined plane. KE = 0.5m*V^2 = 0.5 * 1 * 4^2 = 8.0 J. At bottom of inclined plane. 9.8 - 8.0 = 1.8 J. Lost to heat ...
October 21, 2014

physics
a. Tan A = 4.24/9.47 = 0.44773 A = 24.1o From straight.
October 21, 2014

math
Eq1: x + 2y = 7 Eq2: 3x - 6y = 3 Multiply Eq1 by -3 and add the Eqs: -3x - 6y = -21 +3x - 6y = 3 Sum: -12y = -18 Y = -18/-12 = 3/2 In Eq1, replace Y with 3/2 and solve for X: x + 2*3/2 = 7 X = 7-3 = 4. Solution: (4, 3/2).
October 21, 2014

math
a. X Gal. of premium. (x+420) Gal. of regular 2.55x + 2.30(x+420) = $10,957 Solve for X.
October 20, 2014

physics
Fc = m*g = 80kg * 9.8N/kg = 784 N. = Force of crate. Fn = Fc = 784 N. = Normal. Fk = u*Fn = 0.25 * 784 = 196 N. = Force of kinetic friction. Work = (Fap-Fk))* d = (500-196) * 35 = 10,640 J.
October 20, 2014

Physics
T = d1/V1 + d2/V2 T = 443/(5.8+5.04) + 348/(5.8-5.04) = 40.87 + 457.9 = 498.8 s. = 8.3 Min.
October 20, 2014

Physics
X = 4N. Y = 3N. X + Yi + F3 = 0 4 + 3i + F3 = 0 F3 = -4 - 3i Tan Ar = Y/X = -3/-4 = 0.75000 r = 36.87o(Q1). = Reference angle. A = 36.87 + 180 = 216.87o(Q3). F3 = X/Cos A = -4/Cos216.87 = 5.0 N. @ 216.87o. Note: F3 is = to and opposite of the sum of the two given forces.
October 20, 2014

Physics
Fb = m*g = 4.58kg * 9.8N/kg = 44.9 N. = Force of the block. Fn = 44.9 - 10.5*sin25.5 = 40.4 N. = Normal = Force perpendicular to the floor. Fk = u*Fn = 0.09 * 40.4 = 3.63 N. = Force of kinetic friction. a = (Fx-Fk)/m = (10.5*cos25.5-3.63)/4.58 = 5.85 m/s^2. V = a*t = 5.85 * 5....
October 20, 2014

int.science
1.8*10^-2/9*10^2 = 0.2*10^-4 = 2.0*10^-5
October 20, 2014

physics
u = a/g. For a detailed explanation, see Related Questions: Sat, 11-17-12, 5:33 PM.
October 20, 2014

business
P = Po + Po*r*t = 5000 + 5000*0.058*36 = $15,440
October 20, 2014

Physics 12
F1+F2 = 50N[60o] + 60N[330o] X = 50*Cos60 + 60*Cos330 = 73.3 N. Y = 50*sin60 + 60*sin330 = 8.30 N. (F1 + F2) +F3 = 0 73.3 + 8.3i + F3 = 0 F3 = -73.3 - 8.3i Tan Ar = Y/X = -8.3/-73.3 = 0.11326 Ar = 6.46o N of E = Reference angle(Q1). A = 6.46 + 180 = 186.46o(Q4) = 6.46o S of W ...
October 19, 2014

algebra
F(x) = 2 - 1/4x Y = -(1/4)x + 2 Use the following points for graphing. (x, y) (0, 2) (1, 1.75) (2, 1.5) (3, 1.25) (4, 1) (5, 0.75)
October 19, 2014

algebra
See previous post.
October 19, 2014

algebra
F(x) = 2x^2 + x - 21 Y = 2x^2 + x + 1 = 0 A*C Method: A*C = 2 * (-21 = -42 = -3*14 = -6*7 Choose the pair of factors whose sum = B -6+7 = 1 = B. 2x^2 + (-6x+7x) - 21 = 0 (2x^2-6x) + (7x-21) = 0 Factor each binomial: 2x(x-3) + 7(x-3) = 0 Factor out (x-3): (x-3)(2x+7) = 0 x-3 = ...
October 19, 2014

Geometry
1. Scale: 2in = 6Ft 2. Scale: 1in = 3Ft. 3. Scale: 1/2 in = 1.5 Ft.
October 19, 2014

Geometry
See previous post.
October 19, 2014

geometry
L = 120Ft * 1unit/5Ft = 24 Units. W = 75Ft. * 1unit/5Ft = 15 Units.
October 19, 2014

science
Work = F*d = 250 J. F = 250/d = 250/19 = 13,16 N.
October 19, 2014

algebra
V = 80,000 - 6000t. t years.
October 19, 2014

physics
Fy = = 750*Cos22 = 695.4 N.
October 19, 2014

algebra
V(t) = 80,000 - 6000t
October 18, 2014

Physics
Vo = 200km/h = 200,000m/3600s=55.56 m/s a. Vavg. = (V+Vo)/2 = (0+55.56)/2 = 27.8 m/s. b. V = Vo + a*t = 0 55.56 + a*21 = 0 21a = -55.56 a = -2.65 m/s^2 b.V^2 = Vo^2 + 2a*d d = (V^2-Vo^2)/2a = (0-(55.56^2))/-5.3 = 582 m.
October 18, 2014

algebra
A(w) = sqrt(W^2+13) A(r+1) = sqrt((r+1)^2+13) A(r+1) = sqrt(r^2+2r+1+13) A(r+1) = sqrt(r^2+2r+14)
October 18, 2014

algebra
A(w) =sqrt(W^2 + 13) A(4) = sqrt(4^2 + 13) = 5.385.
October 18, 2014

Physics
a. h = 0.5g*t^2 = 2.5 m. 4.9t^2 = 2.5 m. t^2 = 0.51 Tf = 0.714 s. b. Dx = Xo*Tf = 1450m/s * 0.714s=1026 m.
October 17, 2014

Physics
h = 0.5g*t^2 = 0.031 m 4.9t^2 = 0.031 t^2 = 0.00633 Tf = 0.0795 s. = Fall time. Dx = Xo*Tf = 720 m/s * 0.0795s = 57.3 m.
October 17, 2014

Physics
h = 0.5g*t^2 = 0.93 m. 4.9t^2 = 0.92 t^2 = 0.1878 Tf = 0.433 s. Dx = Xo*Tf = 1.66m/s * 0.433s = 0.719 m.
October 17, 2014

Physics
Vo = 19.4m/s @ 33o Xo = 19.4*Cos33 = 16.27 m/s Yo = 19.4*sin33 = 10.57 m/s. Y^2 = Yo^2 + 2g*h = 0 @ max ht. h = -(Yo^2)/2g = -(10.57^2)/-19.6 = 5.7m Above gnd. Y^2 = Yo^2 + 2g*d Y^2 = 0 + 19.6*(5.7-3.1) = 50.96 Y = 7.14 m/s. = Ver. component of velocity. V^2 = Xo^2 + Y^2 = 16....
October 17, 2014

Trigonometry
mg*sin A = u*mg*Cos A Divide both sides by mg*Cos A: sin A/Cos A = u sin A/Cos A = Tan A Tan A = u = 0.17 A = 9.65o
October 17, 2014

Math
See previous post: Tue, 10-14-14, 2:39 PM.
October 17, 2014

Math
a. d = 13 + 18 +13 = 44 km b. 45 + 45 + 90 = 180o
October 17, 2014

direct variation
Y = 6x = 11 X = 11/6 = 1 5/6. Less than 2.
October 17, 2014

Physics
h = 0.5g*t^2 = 48m. Solve for t.
October 17, 2014

algebra
d1 = r*t = 6mi/h * (12/60)h = 1.2 Miles head start. d2 = d1 + 1.2 mi. 9t = 6t 1.2. Solve for t in hours.
October 17, 2014

Physics
h = 0.5g*t^2 = 100 m. 4.9t^2 = 100 t^2 = 20.40 Tf = 4.52 s. = Fall time. Dx = Xo*Tf = 40m/s * 4.52s = 180.7 m.
October 17, 2014

physics
1. True 2. True 3. False. 4. False 5. False 6. True
October 16, 2014

physics
a. F = m*g = 63.8 * 9.8 = 625.2 N. b. Work = F*d = 625.2 * 0.366 = 228.8 J.
October 16, 2014

Physics Help Please!!!! Urgent!!
1. Fb = m*g = 10 *9.8 = 98 N. = ForceFb of brick. Fap-Fk = m*a 46 - Fk = m*0 = 0 Fk = 46 N. = Force of kinetic friction. u = Fk/Fb = 46/98 = 0.469.
October 16, 2014

Physics
Vo = 5.71m/s[49.8o] Yo = 5.71*sin49.8 = 4.36 m/s. Y^2 = Yo^2 + 2g*h = 0 @ max. ht. h = (Y^2-(Yo^2))/2g h = (0-(4.36^2))/-19.6 = 0.970 m.
October 16, 2014

physics
Vo = 240km/h = 240,000m/3600s = 66.7 m/s V^2 = Vo^2 + 2a*d a = (V^2-Vo^2)/2d = (0-(66.7^2))190 = 23.42 m/s^2.
October 16, 2014

Algebra
d1 = 3km/h * 2h = 6 km Head start. d2 = d1 + 6km 40t = 3t + 6 37t = 6 t = 0.162 h = 9.73 min. to catchup. 2 + 0.162 = 2.162 h = Hours travelled by the first stagecoach. Note: Please check the speed of the 2nd coach; because forty doesn't look right.
October 16, 2014

physics
Vo = 57.1km/h = 57100m/3600s = 15.9 m/s. Fc = m*g = Force of the crate. Fs = u*mg = 0.394mg Fap-Fs = m*a Fap-0.394mg = m*0 = 0 Fap = 0.394mg = Force applied. a=Fap/m = 0.394mg/m=0.394g=0.394*(-9.8) = -3.86 m/s^2. V^2 = Vo + 2a*d d = (V^2-Vo^2)/2a = 0-(15.9^2)/-7.72 = 32.7 m.
October 16, 2014

7th grade math
P = 0.5*20x - 18 = 200 10x - 18 = 200 10x = 218 X = 21.8 or 22 Copies.
October 16, 2014

Pre-Calc/Trig...
Eq1: Y = x^2 + 5x - 2 h = -B/2A = -5/2 k = (-5/2)^2 + 5*(-5/2) - 2 = 25/4 - 25/2 - 2 = 25/4 - 50/4 - 8/4 = -33/4 V(-5/2, -33/4) Y = (x-3)^2 + 5(x-3) - 2 Eq2: Y = x^2 - x - 8 h = -B/2A = 1/2 k = (1/2)^2 - 1/2 - 8 = -8 1/4 = -33/4 V(1/2, -33/4). D. Shifted 3 units to the right.
October 15, 2014

Physics/science
See previous post: Wed,10-15-14, 6:23 AM
October 15, 2014

Science
Xo = 70mi/h * 1600m/mi + 1h/3600s = 31.1 m/s. h = 350 - 82 = 268 m Above the ledge. h = 0.5g*t^2 = 268 m. 4.9t^2 = 268 t^2 = 54.69 Tf = 7.4 s. = Fall time. Dx = Xo*Tf = 31.1m/s * 7.4s = 230 m. = Hor. distance.
October 15, 2014

Physics
a. Vpa = Vpg + Va = -228 km/h Vpg - 50i = -228 Vpg = -228 + 50i Tan Ar = Y/X = 50/-228 = -0.21930 Ar = -12.4o = Reference angle. A = -12.4 + 180 = 167.63oC CCW = 12.4o N. of W. = Heading. b. Vpg = X/CosA = -228/Cos167.63 = 233.4 km/h. = Plane's speed relative to gnd.
October 15, 2014

Physics
Vo = 31m/s[52o] Yo = 31*sin52 = 34.4 m/s. h = Yo*t + 0.5g*t^2 = 10 m. 34.4*t - 4.9t^2 = 10 -4.9t^2 + 34.4t - 10 = 0 Use Quadratic formula and get: t1 = 0.304 s. t2 = 6.71 s.
October 14, 2014

physics
h = L*sin A = 7.06*sin29 = 3.42 m. V^2 = Vo^2 + 2g*h = 4.03^2 + 19.6*3.42 = 83.3 V = 9.13 m/s.
October 14, 2014

PHYSICS
Fr = 10N[45o] + 10N[330] X = 10*Cos45 + 10*Cos330 = 15.73 m/s. Y = 10*sin45 + 10*sin330 = 2.071 m/s. Tan A = Y/X = 2.071/15.73 = 0.13166 A = 7.50o. Fr = X/Cos A = 15.73/Cos7.50 = 15.9 N. @ 7.50o.
October 14, 2014

Physics
Xo = 60 m/s. Yo = 20 m/s. Vo = ? m/s. Tan A = Yo/Xo = 20/60 = 0.33333 A = 18.43o = Direction. Vo = Xo/Cos A = 60/Cos18.43 = 63.2 m/s @ 18.43o
October 14, 2014

Pre-Calc/Trig...
Axis = h = Xv = -B/2A = 4/4 = 1. k = Y = 2*1^2 - 4*1 + 2 = 0 V(h,k) = V(1, 0).
October 14, 2014

Physics
h = 0.5g*t^2 = 6.14 m. 4.9t^2 = 6.14 t^2 = 1.253 Tf = 1.12 s. = Fall time.
October 14, 2014

physics
Incomplete.
October 13, 2014

Algebra 2 Answer Check
1. |3x-4|/(-5) = 6 (3x-4)/(-5) = 6 3x-4 = -30 3x = -26 X = -26/3 Does not satisfy Eq. (-3x+4)/(-5) = 6 -3x+4 = -30 -3x = -34 X = -34/-3 = 34/3 Does not satisfy Eq.
October 13, 2014

Algebra 2 Answer Check
1. |3x-4}/( 2. |2x-5| = x + 3 2x-5 = x+3 X = 8. -2x+5 = x+3 -3x = -2 X = 2/3 3. |5x+15| > 20 5x+15 > 20 5x > 20-15 X > 1 -5x-15 = > 20 -5x > 20 + 15 X < -7 Or 1 < X < -7 4. |x-2|/4 => 5 (x-2)/4 => 5 x-2 => 20 X => 22. (-x+2)/4 => 5 -x...
October 13, 2014

Business Math
P = Po*r*t = 1000*(0.06/365)*192 = 31.56 = Penalty.
October 13, 2014

Finance kennedy king
See previous post: Sun, 10-12-14, 11:49 PM.
October 13, 2014

physics
a. ho + (V-Vo^2)/2g=13 + (0-(8^2)/-19.6 = 16.3 m. Above gnd. b. V^2 = Vo^2 + 2g*h Vo = 0 m/s, 2g = 19.6 m/s^2, h = 16.3 m. Calculate V. c. V = Vo + g*Tr = 0. Tr = -Vo/g = -8/-9.8 = 0.82 s=Rise time. h = 0.5g*t^2 = 16.3 m. 4.9t^2 = 16.3 t^2 = 3.33 Tf = 1.82 s. = Fall time. Tr+...
October 13, 2014

8
a. P = Po + Po*r*t = $9,500 2,000 + 2000*r*1 = 9,500 Solve for r. b. 9500 - 9500*r*t = 2000 9500 - 9500*r*1 = 2000 -9500r = 2000-9500 = -7500 r = 0.7895 = 78.95%
October 12, 2014

5
P = Po + Po*r*t = 5000 + 5000*0.08*4 = 5000 + 1600 = $6600 = Amt. paid. Int. = $1600
October 12, 2014

F
Growth rate = 5%/5yrs. = 1%/yr. A = Po + Po*r*t = 3 Million. 1.5 + 1.5*0.01*t = 3 1.5 + 0.015t = 3 0.015t = 1.5 t = 100 Years.
October 12, 2014

physics
h = ho + (V^2-(Vo^2))/2g h = 50 + (0-(20^2))/-19.6 = 70.4 m. Above gnd. V^2 = Vo^2 + 2g*h = 0 + 19.6*70.4 = 1380 V = 37.1 m/s.
October 12, 2014

physics
V^2 = Vo^2 + 2g*h Vo = 0 = Vertical component of initial velocity. g = 9.8 m/s^2 h = 0.70 m. Solve for V in m/s. Note: The mass of the ball does not matter.
October 12, 2014

electrical
Incomplete.
October 12, 2014

physics
30Rad/s * 1Rev/6.28Rad * 1s/10m = 0.478 Rev/m = 2.093 m/Rev = Circumference(C). pi*D = 2.093 3.14*D = 2.093 D = 0.67 m = Diameter.
October 12, 2014

finance
Sales (100 units) $200 Variable costs ($.80 ea) 80 Fixed Costs 20 EBIT 100 Interest Expense 30 EBT 70 Income tax 24 Net Income 46 Breakeven point in units
October 12, 2014

Physics
V = Vo + a*t a = (V-Vo)/t = (25-5)/40 = 0.5 m/s^2.
October 12, 2014

engineering science N4
Fp = mg*sin A = Force parallel to the incline. Fn = mg*Cos A = Normal = Force perpendicular to the incline. Fs = u*Fn = Force of static friction. Fp-Fs = 0 Fp = Fs mg*sin A = u*mg*Cos A Divide both sides by mg*Cos A: sin A/Cos A = u = 0.3 sin A/Cos A = Tan A Tan A = 0.30 A = ...
October 12, 2014

trig
Incomplete.
October 12, 2014

physics
V^2 = X^2 + Y^2 = 15.5^2 + 10.6^2 Solve for V.
October 11, 2014

physics
Vo = 78km/h = 78000m/3600s. = 21.7 m/s. V^2 = Vo^2 + 18g*d d = (V^2-Vo^2)/18g = 0-(21.7^2)/-176.4 = 2.67 m.
October 11, 2014

physics
Fr = 5N[70o] + 8[35] + 4[20] + 7[245] X=5*Cos70 + 8*Cos35 + 4*Cos20 + 7*Cos245 = 9.1 N. Y=5*sin70 + 8*sin35 + 4*sin20 +7*sin245 = 4.31 N. Tan A = Y/X = 4.31/9.1 = 0.47583 A = 25.4o CCW = Direction. Fr = X/Cos A = 9.1/Cos25.4 = 10.0 N. @ 25.4o = Resultant force.
October 11, 2014

physics
See previous post: Fri, 10-10-14, 10:51 PM.
October 11, 2014

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