A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 9.00 m. At point A the speed of the car is 11.6 m/s, and at point B, the speed is 12.6 m/s. Assume the child is holding on and does not wear a seat belt. B A 30° (a) What is the force (in N) of the car seat on the child at point A? (Enter the magnitude.) ✓✔N 205.6 (b) What is the force (in N) of the car seat on the child at point B? (Enter the magnitude.) X N 109.8 (c) What minimum speed (in m/s) is required to keep the child in his seat at point A? 9.40 m/s

A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 9.00 m. At point A the speed of the car is 11.6 m/s, and at point B, the speed is 12.6 m/s. Assume the child is holding on and does not wear a seat belt. B A 30° (a) What is the force (in N) of the car seat on the child at point A? (Enter the magnitude.) ✓✔N 205.6 (b) What is the force (in N) of the car seat on the child at point B? (Enter the magnitude.) X N 109.8 (c) What minimum speed (in m/s) is required to keep the child in his seat at point A? 9.40 m/s

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.

Question

A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 9.00 m. At point A the speed of the car is 11.6 m/s, and at point B, the speed is 12.6 m/s. Assume the child is not
holding on and does not wear a seat belt.
B
A
30°
(a) What is the force (in N) of the car seat on the child at point A? (Enter the magnitude.)
205.6
✓N
(b) What is the force (in N) of the car seat on the child at point B? (Enter the magnitude.)
XN
109.8
(c) What minimum speed (in m/s) is required to keep the child in his seat at point A?
9.40
m/s

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