https://euler.vaniercollege.qc.ca/gwikis/pwiki/index.php?action=history&feed=atom&title=Applications_Of_Newton%27s_Third_Law 2026-04-20T21:18:30Z Revision history for this page on the wiki MediaWiki 1.43.0 https://euler.vaniercollege.qc.ca/gwikis/pwiki/index.php?title=Applications_Of_Newton%27s_Third_Law&diff=367&oldid=prev 2011-06-12T22:07:46Z

<p></p> <p><b>New page</b></p><div>&#039;&#039;Helena Dedic&#039;&#039;<br /> <br /> &lt;span style=&quot;color:Red&quot;&gt;&lt;u&gt;&#039;&#039;&#039;Beware:&lt;/u&gt;&lt;/span&gt; Many of the solutions to these exercises use &lt;math&gt;g = 10 m/s^2&lt;/math&gt; !&#039;&#039;&#039;<br /> &lt;br&gt;<br /> <br /> ==Exercise 1==<br /> <br /> A 0.3 kg puck slides on the ice which exerts a 0.06 N force of friction on it. What are all the action-reaction pairs of the puck sliding on the ice?&lt;br&gt;&lt;br&gt;<br /> <br /> *[[Newton&#039;s 3rd Law_EX 1|SOLUTION EX 1]]&lt;br&gt;&lt;br&gt;<br /> <br /> ==Exercise 2==<br /> <br /> A 70 kg man pulls a rope attached to a 100 kg box with a horizontal force of 200 N as shown. The box doesn&#039;t move.&lt;br&gt;&lt;br&gt;<br /> [[image:NIII_APP_EX_2.png|TOP]]<br /> <br /> (a) Calculate all the forces exerted on the box.&lt;br&gt;<br /> (b) Calculate all the forces exerted on the man.&lt;br&gt;&lt;br&gt;<br /> <br /> *[[Newton&#039;s 3rd Law_EX 2|SOLUTION EX 2]]&lt;br&gt;&lt;br&gt;<br /> <br /> ==Exercise 3==<br /> <br /> The same 70 kg man pushes down at an angle of 30° to the horizontal with the force of 200 N on the 100 kg box. The box still doesn&#039;t move.&lt;br&gt;&lt;br&gt;<br /> [[image:NIII_APP_EX_3.png|TOP]]<br /> <br /> (a) Calculate all the forces exerted on the box.&lt;br&gt;<br /> (b) Calculate all the forces exerted on the man.&lt;br&gt;&lt;br&gt;<br /> <br /> *[[Newton&#039;s 3rd Law_EX 3|SOLUTION EX 3]]&lt;br&gt;&lt;br&gt;<br /> <br /> ==Exercise 4==<br /> <br /> Bob and Jim are involved in a fight and they push each other. Jim&#039;s mass is 50 kg and Bob&#039;s mass is 120 kg. The maximum friction between the horizontal surface and Jim&#039;s feet is 250 N. Similarly, the maximum friction between the horizontal surface and Bob&#039;s feet is 600 N. State which of the following statements are incorrect and why, and also state which of the following statements are correct and why:<br /> <br /> (a) The force exerted on Jim by Bob is larger than the force with which Jim pushes Bob.&lt;br&gt;<br /> (b) The force of friction exerted on Bob is always larger than the force of friction exerted on Jim.&lt;br&gt;<br /> (c) The force with which Jim pushes Bob is the same as the force with which Bob pushes Jim.&lt;br&gt;<br /> (d) Bob is at rest because the force exerted by Jim on Bob is balanced out by the force that Bob exerts on Jim.&lt;br&gt;<br /> (e) Jim may be at rest because the force of friction cancels out the force exerted by Bob.&lt;br&gt;&lt;br&gt;<br /> <br /> *[[Newton&#039;s 3rd Law_EX 4|SOLUTION EX 4]]&lt;br&gt;&lt;br&gt;</div>

imported>Patrick