Homework Answers
Concept - as we see from the equation of motion that the vertical component of normal force balances the weight and the horizontal component of normal force provides the centripetal force for the circular motion. We use this to find the banking angle as shown below,
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Question 24 0 out of 1 points The banking angle for a curve of radius 400 ft for a speed of 60 mi/h should be appro...
Determine the angle at which a highway curve with 400 ft radius must be banked if...
Determine the angle at which a highway curve with 400 ft radius must be banked if an automobile rounding the curve at 45 mi/h is to have no tendency to skid. A) Free body diagram B) Equations C) Calculations and solutions
1) Determine the minimum radius of curvature required for a 60 mi/hr design speed with a...
1) Determine the minimum radius of curvature required for a 60 mi/hr design speed with a 0.06 superelevation rate and 64 degree of curvature (A). Find the locations for T.C. and C.T. if the P.I. is located at 500+00. In addition, calculate T, L, M, E, and C. 2) Prepare a table of chords and deflection angles for staking out a 600 foot radius circular curve with a deflection angle of 60 degrees. Give values for every full station and...
4. +,011 points 1 A motorcycle traveling at a speed of 36.0 mi/h needs a minimum...
4. +,011 points 1 A motorcycle traveling at a speed of 36.0 mi/h needs a minimum of 40.0 ft to stop. If the same motorcycle is traveling 71.0 mi/h, determine its minimum stopping distance (in ft) assuming the same rate of acceleration. Look carefully at the kinematic equation relating the final speed, initial speed, acceleration, and change in position. Note that the velocities velocities? ft Need Help? Read It Practice Another Version
1) A surveyor sees a circular planetarium through an angle that measures 60 degrees. If the...
1) A surveyor sees a circular planetarium through an angle that
measures 60 degrees.
If the surveyor is 33 ft from the door, what is the diameter (in
ft) of the planetarium?
2) From the veranda beach front hotel, Manny is researching the
seascape through his binoculars. A ship suddenly appears on the
horizon. If Manny is 40 ft above the earth, how far (in feet) is
the ship out in sea. (Hint: The radius of the earth is
approximately...
1) At what angle should a curve of radius 170 m be banked, so cars can...
1) At what angle should a curve of radius 170 m be banked, so cars can travel safely at 55 mi/h without relying on friction? 2)The system shown is moving down the incline with contant veloicty. If M = 10 kg and m= 54 kg and an incline angle is 300 between the block M and the incline? with steps please
40 points possible 24/24 answered ot no Question 1 < > 91 0 Out of 500...
40 points possible 24/24 answered ot no Question 1 < > 91 0 Out of 500 college students sampled, 9% want to have kids in the future. Based on this sample, construct a 90% confidence interval for the true population proportion of college students who want to have kids in the future. Report your answers to 3 decimal places. : <p > Next Question
Problem 4. A section of a two-lane highway has 12-ft lanes and a design speed of...
Problem 4. A section of a two-lane highway has 12-ft lanes and a design speed of 75 mi/h. The section contains a vertical curve and a horizontal curve. The vertical curve connects a-2.5% grade and a +1.5% grade. The PVT of this vertical curve is at station 36 + 50. The PC of the horizontal curve is located 294 ft before the PVC of the vertical curve. The horizontal curve has superelevation of 8% and central angle of 38 degrees....
6:47 1 4 Search <Back Hw#3-2019.doc 15- 10. A horizontal curve is designed for a two-lane...
6:47 1 4 Search <Back Hw#3-2019.doc 15- 10. A horizontal curve is designed for a two-lane road in mountainous terrain. The following data are known. Intersection angle: 40 degrees Tangent length: 436.76 feet Station of Pl: 2700+10.65 fs- 0.12 e- 0.08 Determine the following. (a) Design speed (b) Station of the PC (c) Station of the PT (d) Deflection angle and chord length to the first even 100 ft station. 15-11. A proposed highway has two tangents of bearings N...
solve some parts of question Question 1 (40 points) G 10 ft The weight of the...
solve some parts of question
Question 1 (40 points) G 10 ft The weight of the man is 180 lb. As he climbs the ladder, he stops at the position shown on the figure. The friction at A is He = 0.4. The weight of the ladder is neglected. (i) 10 points: Draw the free body diagram. It is assumed that the contact at B is smooth. (ii) 10 points: State the equation of equilibrium A - 3ft - I...
QUESTION 7 1 points A sprinter needs to improve her time in the 400 m dash...
QUESTION 7 1 points A sprinter needs to improve her time in the 400 m dash event. What is her acceleration if she is cruising at 8.5s m/s and speeds up to 9.75 m/s in 1.08 s? OA 1.11 m/s OB.-1.11 m/s2 O C 0.900 m/s2 D.-0.900 m/s2 QUESTION 8 1 points A catcher catches a baseball that is traveling at 126 km/h. If the ball stops within 0.230 s, what is its acceleration? O152 m/s2 O-152 m/s2 O 0.547...
1) Determine the minimum radius of curvature required for a 60 mi/hr design speed with a 0.06 superelevation rate and 64 degree of curvature (A). Find the locations for T.C. and C.T. if the P.I. is located at 500+00. In addition, calculate T, L, M, E, and C. 2) Prepare a table of chords and deflection angles for staking out a 600 foot radius circular curve with a deflection angle of 60 degrees. Give values for every full station and...
4. +,011 points 1 A motorcycle traveling at a speed of 36.0 mi/h needs a minimum of 40.0 ft to stop. If the same motorcycle is traveling 71.0 mi/h, determine its minimum stopping distance (in ft) assuming the same rate of acceleration. Look carefully at the kinematic equation relating the final speed, initial speed, acceleration, and change in position. Note that the velocities velocities? ft Need Help? Read It Practice Another Version
1) A surveyor sees a circular planetarium through an angle that
measures 60 degrees.
If the surveyor is 33 ft from the door, what is the diameter (in
ft) of the planetarium?
2) From the veranda beach front hotel, Manny is researching the
seascape through his binoculars. A ship suddenly appears on the
horizon. If Manny is 40 ft above the earth, how far (in feet) is
the ship out in sea. (Hint: The radius of the earth is
approximately...
40 points possible 24/24 answered ot no Question 1 < > 91 0 Out of 500 college students sampled, 9% want to have kids in the future. Based on this sample, construct a 90% confidence interval for the true population proportion of college students who want to have kids in the future. Report your answers to 3 decimal places. : <p > Next Question
Problem 4. A section of a two-lane highway has 12-ft lanes and a design speed of 75 mi/h. The section contains a vertical curve and a horizontal curve. The vertical curve connects a-2.5% grade and a +1.5% grade. The PVT of this vertical curve is at station 36 + 50. The PC of the horizontal curve is located 294 ft before the PVC of the vertical curve. The horizontal curve has superelevation of 8% and central angle of 38 degrees....
6:47 1 4 Search <Back Hw#3-2019.doc 15- 10. A horizontal curve is designed for a two-lane road in mountainous terrain. The following data are known. Intersection angle: 40 degrees Tangent length: 436.76 feet Station of Pl: 2700+10.65 fs- 0.12 e- 0.08 Determine the following. (a) Design speed (b) Station of the PC (c) Station of the PT (d) Deflection angle and chord length to the first even 100 ft station. 15-11. A proposed highway has two tangents of bearings N...
solve some parts of question
Question 1 (40 points) G 10 ft The weight of the man is 180 lb. As he climbs the ladder, he stops at the position shown on the figure. The friction at A is He = 0.4. The weight of the ladder is neglected. (i) 10 points: Draw the free body diagram. It is assumed that the contact at B is smooth. (ii) 10 points: State the equation of equilibrium A - 3ft - I...
QUESTION 7 1 points A sprinter needs to improve her time in the 400 m dash event. What is her acceleration if she is cruising at 8.5s m/s and speeds up to 9.75 m/s in 1.08 s? OA 1.11 m/s OB.-1.11 m/s2 O C 0.900 m/s2 D.-0.900 m/s2 QUESTION 8 1 points A catcher catches a baseball that is traveling at 126 km/h. If the ball stops within 0.230 s, what is its acceleration? O152 m/s2 O-152 m/s2 O 0.547...
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