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17. A certain rifle has a muzzle velocity of 490 m/s. The rifle is pointed vertically upward and fired from an automobile moving horizontally at a speed of 19.6 m/s a. Determine the radius of curvature of the path of the bullet at its maximum altitude b. How far has the car traveled at this instant c. Where will the bullet strike the ground

17. A certain rifle has a muzzle velocity of 490 m/s. The rifle is pointed vertically upward and fired from an automobile moving horizontally at a speed of 19.6 m/s a. Determine the radius of curvature of the path of the bullet at its maximum altitude b. How far has the car traveled at this instant c. Where will the bullet strike the ground

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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16. The trajectory of a rocket makes an angle of 200 degrees below the horizontal when it is moving at 5,400 m/s. The thruster engine gives it a constant horizontal acceleration of 6 m/s^2 and the downward acceleration is the acceleration due to gravity, Determine a. The rate at which the speed is changing b. The normal acceleration c. The radius of curvature 17. A certain rifle has a muzzle velocity of 490 m/s. The rifle is pointed vertically upward and fired from an automobile moving horizontally at a speed of 19.6 m/s a. Determine the radius of curvature of the path of the bullet at its maximum altitude b. How far has the car traveled at this instant c. Where will the bullet strike the ground 18. A car starts from rest at a point A and increases its speed at a constant rate as it enters a curve. The magnitude of the total acceleration of the car as it passes point B, which is 400/3m along the curve from point A, is 2.5 m/s^2. The radius of curvature at point B is 200m a. Determine the normal component of the acceleration at point B b. Determine the tangential component of the acceleration at point B c. If the tangential acceleration at point B is directed downward to the right at an angle of 36.87 degrees below the horizontal, and the normal acceleration is also directed downward, determine the rectangular components of the acceleration at point B. 19. A particle which moves along the curved path shown decelerates at a rare proportional to the distance, measured along the curve, from point 0. It passess point 0 with a speed of 10 m/s and slow down to 8 m/s at point A in a distance of 12m, measured along the curve from point 0. The magnitude of the total acceleration of the particle is 5 m/s^2 as it passes point A. Determine: tangent line to the curve at point path 3 a. The normal component of acceleration at point A b. The tangential component of acceleration at point A c. The radius of curvature of the pat at A d. The rectangular components of the acceleration at point A 20. Determine the force P that will give the body an acceleration of 0.5g m/s^2/ The coefficient of kinetic friction is 0.35
Transcribed Image Text:16. The trajectory of a rocket makes an angle of 200 degrees below the horizontal when it is moving at 5,400 m/s. The thruster engine gives it a constant horizontal acceleration of 6 m/s^2 and the downward acceleration is the acceleration due to gravity, Determine a. The rate at which the speed is changing b. The normal acceleration c. The radius of curvature 17. A certain rifle has a muzzle velocity of 490 m/s. The rifle is pointed vertically upward and fired from an automobile moving horizontally at a speed of 19.6 m/s a. Determine the radius of curvature of the path of the bullet at its maximum altitude b. How far has the car traveled at this instant c. Where will the bullet strike the ground 18. A car starts from rest at a point A and increases its speed at a constant rate as it enters a curve. The magnitude of the total acceleration of the car as it passes point B, which is 400/3m along the curve from point A, is 2.5 m/s^2. The radius of curvature at point B is 200m a. Determine the normal component of the acceleration at point B b. Determine the tangential component of the acceleration at point B c. If the tangential acceleration at point B is directed downward to the right at an angle of 36.87 degrees below the horizontal, and the normal acceleration is also directed downward, determine the rectangular components of the acceleration at point B. 19. A particle which moves along the curved path shown decelerates at a rare proportional to the distance, measured along the curve, from point 0. It passess point 0 with a speed of 10 m/s and slow down to 8 m/s at point A in a distance of 12m, measured along the curve from point 0. The magnitude of the total acceleration of the particle is 5 m/s^2 as it passes point A. Determine: tangent line to the curve at point path 3 a. The normal component of acceleration at point A b. The tangential component of acceleration at point A c. The radius of curvature of the pat at A d. The rectangular components of the acceleration at point A 20. Determine the force P that will give the body an acceleration of 0.5g m/s^2/ The coefficient of kinetic friction is 0.35
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