Max Height of 2kg Object in Newton Law Problem

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Homework Help Overview

The problem involves two objects with different masses connected by a cord over a frictionless pulley, specifically focusing on determining the maximum height reached by the lighter object when released from rest.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the initial conditions and the mechanics involved, with one suggesting a calculation based on the movement of the heavier block and its effect on the lighter block. There is also a consideration of potential typos in the problem statement or answers provided.

Discussion Status

The discussion is ongoing, with participants expressing differing views on the maximum height, and some questioning the accuracy of the problem details. No consensus has been reached regarding the correct height, and there is an exploration of possible errors in the problem setup.

Contextual Notes

Participants note a potential typo in the problem or answers, which may affect their calculations and interpretations.

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1. "two objects with masses 5kg and 2kg hang .6 m above the floor from the ends of a cord 6m long passing over a frictionless pulley. Both objects start from rest. Find the maximum height reached by the 2kg object.


Homework Equations



Newton's laws.
Kinematic equations.

The Attempt at a Solution



The answer is around 1.4 but I keep thinking its 1.2m.
My thinking is that the heavier block will fall .6m causing the rope to pull on the lighter block raising it .6m and making the total height of that block .6m + .6m = 1.2m ... I don't know what else to try I tried solving for a and using kinematics but I just got 1.19 which is basically the same thing.
 
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As far as I can see the answer should be 1.2 m . Are you sure you have written down the question properly ?
 
yes I am sure maybe a typo in the answers?
 
Must be a typo .
 

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