PheT simulations

Here is the one for force and motion:
Forces

Problem Set - Due Friday 11/13

RP2: Problem Set I:

1.  A 6.0 kg block rests on top of a 7.0 kg block, which is resting on a horizontal table.a.       What is the force exerted by the 6 kg block on the 7 kg block (include magnitude and direction)
b.      What is the force exerted by the 7 kg block on the 6 kg block?
 2.      A 90 kg man and a 55 kg man have a tug-of-war. The 90 kg man pulls on the rope such that the 55 kg man accelerates at 0.025 m/s². What force does the rope exert on the 90 kg man?
 3.      You are dragging a box full of books from one room to another. The box and books together have a combined weight of 134 N. If the coefficient of static friction between the pavement and the box is 0.55, how hard must to push in order to get the box moving?
  4.      You move a 41 kg bookcase to a different place in the house. If you push with a force of 65 N and the bookcase accelerates at 0.12 m/s² , what is the coefficient of kinetic friction between the bookcase and the carpet?
 5.      You push a 13 kg table with a horizontal force of 20 N, but it does not move. However, you push it when a horizontal force of 25 N and it accelerates at 0.26 m/s². From this information, what can you conclude about the coefficients of static and kinetic friction? 

Static and Kinetic - Khan Academy

Video on Newton's Third Law

This might be helpful!

Bozeman Science - Newton's Third Law

Forces At Work - Week of 11/2

Happy November, everyone!

Upcoming Dates of Interest:
RP2 Mini Unit 2 Quiz: Friday November 13th
Veterans Day - Wednesday, November 11th
Best of Thomas Brunch: Thursday, November 5th

This week we will be finishing up our concept base for Newton's laws and move onto some more difficult applications. The big question driving our mini-unit is: how do objects resist motion?

Newton's Third Law

Here are some resources for us from the usual suspects:
Physics Classroom - Friction
Khan Academy - Friction

Remember again that you can access important information on the class dropbox. I have also attached a link to the relevant textbook readings here.

Have a great week!

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