21. Which one of the following expressions determines the minimum speed that the car must have at the top of the track if it is to remain in contact with the track? A) v=MgR B) v = 2gR C) ²=2gR D) v²=gR E) v=gR

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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**Question 21:**

Which one of the following expressions determines the minimum speed that the car must have at the top of the track if it is to remain in contact with the track?

A) \( v = MgR \)

B) \( v = 2gR \)

C) \( v^2 = 2gR \)

D) \( v^2 = gR \)

E) \( v = \sqrt{gR} \)

*Note:* This is a multiple-choice question related to physics, specifically addressing the minimum speed needed for an object in circular motion to stay in contact with the track.
Transcribed Image Text:**Question 21:** Which one of the following expressions determines the minimum speed that the car must have at the top of the track if it is to remain in contact with the track? A) \( v = MgR \) B) \( v = 2gR \) C) \( v^2 = 2gR \) D) \( v^2 = gR \) E) \( v = \sqrt{gR} \) *Note:* This is a multiple-choice question related to physics, specifically addressing the minimum speed needed for an object in circular motion to stay in contact with the track.
**Instructions for Physics Problem Solving**

Use the following information to answer questions 20-21:

A small car of mass \( M \) travels along a straight, horizontal track. As suggested in the figure, the track then bends into a vertical circle of radius \( R \).

**Diagram Explanation:**

The diagram shows a small car (labeled with mass \( M \)) on a track. The track transitions from a horizontal path to a vertical circular loop. The radius of this loop is marked as \( R \). The car is depicted moving towards the loop, illustrating the transition from linear to circular motion.
Transcribed Image Text:**Instructions for Physics Problem Solving** Use the following information to answer questions 20-21: A small car of mass \( M \) travels along a straight, horizontal track. As suggested in the figure, the track then bends into a vertical circle of radius \( R \). **Diagram Explanation:** The diagram shows a small car (labeled with mass \( M \)) on a track. The track transitions from a horizontal path to a vertical circular loop. The radius of this loop is marked as \( R \). The car is depicted moving towards the loop, illustrating the transition from linear to circular motion.
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