In the figure below, a runaway truck with failed brakes is moving downgrade at 36 m/s just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of theta = 15°. The truck’s mass is 1.5 x 104 kg. (a) What minimum length L of the ramp must the ramp have if the truck is to stop at the top of the ramp at height h? (b) Does the minimum length L increase, decrease, or remain the same if the truck’s mass is decreased? Why? (c) If its speed is decreased? Why? Hint: Use Energy Principles.
In the figure below, a runaway truck with failed brakes is moving downgrade at 36 m/s just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of theta = 15°. The truck’s mass is 1.5 x 104 kg. (a) What minimum length L of the ramp must the ramp have if the truck is to stop at the top of the ramp at height h? (b) Does the minimum length L increase, decrease, or remain the same if the truck’s mass is decreased? Why? (c) If its speed is decreased? Why? Hint: Use Energy Principles.
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter8: Conservation Of Energy
Section: Chapter Questions
Problem 8.78AP
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In the figure below, a runaway truck with failed brakes is moving
downgrade at 36 m/s just before the driver steers the truck up a frictionless
emergency escape ramp with an inclination of theta = 15°. The truck’s mass is
1.5 x 104 kg. (a) What minimum length L of the ramp must the ramp have if
the truck is to stop at the top of the ramp at height h? (b) Does the minimum
length L increase, decrease, or remain the same if the truck’s mass is
decreased? Why? (c) If its speed is decreased? Why? Hint: Use Energy
Principles.
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