Saturday
April 19, 2014

Homework Help: physics grade 12

Posted by anonymous on Wednesday, March 14, 2012 at 3:45pm.

In this problem they show a diagram of a pulley system with an inclined plane (25 degree incline). There is a box called m1=47kg resting on the incline plane and m1=35kg hanging on the vertical line. The question reads: The coefficient of friction between m1 and the surfvace of the inclined plane are Ustatic=0.42 and Ukinetic=0.19.
a)if the masses are held in place and then released , will they start to move? ------> I know the answer is NO.
b)how much mass would you have to add to m2 to cause the masses to begin to move? ----> The answer should be 2.8kg but I dont know how the book got this answer.
c)If you said no to a) and added the mass that you calculated in b), what would be the acceleration of the masses? ---> answer given in the back of textbook is 5.7 m/s^2

ANY help with this problem would be greatly appreciated!! THANK YOU SO MUCH in advance :)

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math grade 5 - My sister in grade 5 needs help but i dunt exactly know how to do...
Basic Math Venn Diagram - Hi! Having a lot of trouble with this one problem. ...
6th grade - Show me a plot diagram example please.
4th grade-science - what is the connection between air pressure and the weather....
physics - A journey consists of two displacements: the first is 500m in a ...
5th grade math - can you please explain &show me how to get these answers to ...
Math - Are you trying to solve for x, n or p? solve for n Show me how to work ...
Trig - Find Theta in the degree measure for the indicated quadrant. Show the ...
microeconomics - The cost of producing flat-screen TVs has fallen over the past ...
7th grade math - How would you solve the problem below using subsitution method...

Search
Members