Question

Notify Me Bookmark

SAMPLE PROBLEM 13.4 A 2000−lb car starts from rest at point 1 and moves without friction down the track shown. (a) Determine the force exerted by the track on the car at point 2, where the radius of curvature of the track is 20 ft. (b) Determine the minimum safe value of the radius of curvature at point 3.

SAMPLE PROBLEM 13.4 A 2000−lb car starts from rest at point 1 and moves without friction down the track shown. (a) Determine the force exerted by the track on the car at point 2, where the radius of curvature of the track is 20 ft. (b) Determine the minimum safe value of the radius of curvature at point 3.

Image text
SAMPLE PROBLEM 13.4 A 2000 − l b car starts from rest at point 1 and moves without friction down the track shown. (a) Determine the force exerted by the track on the car at point 2 , where the radius of curvature of the track is 20 ft . (b) Determine the minimum safe value of the radius of curvature at point 3 .

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

A skateboarder with his board can be modeled as a particle of mass 72.0 kg, located at his center of mass. As shown in the figure below, the skateboarder starts from rest in a crouching position at one lip of a half-pipe (point A). On his descent, the skateboarder moves without friction so that his center of mass moves through one quarter of a circle of radius 5.70 m. (a) Find his speed at the bottom of the half-pipe (point (B). m/s (b) Immediately after passing point B, he stands up and raises his arms, lifting his center of mass and essentially "pumping" energy into the system. Next, the skateboarder glides upward with his center of mass moving in a quarter circle of radius 5.32 m, reaching point (D). As he passes through point (D), the speed of the skateboarder is 4.73 m/s. How much chemical potential energy in the body of the skateboarder was converted to mechanical energy when he stood up at point (B) J (c) How high above point (D) does he rise? m
Solution
0 0

A roller-coaster car has a mass of 514 kg when fully loaded with passengers. The path of the coaster from its initial point shown in the figure to point B involves only up-and-down motion (as seen by the riders), with no motion to the left or right. Assume the roller-coaster tracks at points (A) and (B) are parts of vertical circles of radius r1 = 10.0 m and r2 = 15.0 m, respectively. (a) If the vehicle has a speed of 19.1 m/s at point A, what is the force exerted by the track on the car at this point? N (b) What is the maximum speed the vehicle can have at B and still remain on the track? m/s

Solution
4 0

A small block of mass m = 0.500 kg is fired with an initial speed of v0 = 4.30 m/s along a horizontal section of frictionless track, as shown in the top portion of the figure below. The block then moves along the frictionless, semicircular, vertical tracks of radius R = 1.45 m. (a) Determine the force exerted by the track on the block at points (A) and (B). track force at (A) N track force at (B) N (b) The bottom of the track consists of a section (L = 0.411 m) with friction. Determine the coefficient of kinetic friction between the block and that portion of the bottom track if the block just makes it to point C on the first trip. Hint: If the block just makes it to point (C), the force of contact exerted by the track on the block at that point is zero.
Solution
0 0