Answered: A 2.0-N rock slides on a frictionless…

A 2.0-N rock slides on a frictionless inclined plane. Which one of the following statements is true concerning the normal force that the plane exerts on the rock?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 52P: A 15.0-lb block rests on a horizontal floor, (a) What force does the floor exert on the block? (b) A...

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

If the coefficient of kinetic friction,Hk, between the block and the surface is 0.30 and the magnitude of the frictional force is 80.0 N, what is the
weight of the block?
A) 1.656 N
B) B) 4.0 N
C) C) 165.6 N
D) 266.7 N
Question 23
A 2.0-N rock slides on a frictionless inclined plane. Which one of the following statements is true concerning the normal force that the plane
exerts on the rock?
A) A) The normal force is zero newtons.
B) B) The normal force is 2.0 N.
C) The normal force is less than 2.0 N, but greater than zero newtons.
D) D) The normal force is greater than 2.0 N.

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