(a) Explanation Given that the train is moving with constant speed. According to Newton’s first law, every object will continue in its state of rest or of uniform motion unless it is compelled by an external unbalanced force. Since the train under consideration is moving with constant speed in a straight line, its velocity is constant and it is under uniform motion. This implies that the net force acting on the train is zero. When air resistance and friction is neglected, there is no force that being applied on the spring scales A, B, and C... (b) To determine The relative readings on the spring scales A, B, and C when air resistance and friction is considered. (c) To determine The readings of the spring scales A, B, and C.

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ISBN: 9781260486919

Author: GIAMBATTISTA

Publisher: MCG

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows:

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Chapter 4, Problem 140P

(a)

To determine

The relative readings on the spring scales A, B, and C when air resistance and friction is neglected.

(b)

To determine

The relative readings on the spring scales A, B, and C when air resistance and friction is considered.

(c)

To determine

The readings of the spring scales A, B, and C.

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Chapter 4, Problem 139P

Chapter 4, Problem 141P

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