I am quoting a text from a web sight before my question.
"Let's assume we have a 5 kg box on the floor. Let's arbitrarily call its current potential energy zero, just to give us a reference point. If we do work to lift the box one meter off the floor, we need to overcome the force of gravity...
I posted this Question on yahoo answers in this way and got a very good answer showing that my understanding is correctA book of mass 5kg is lifted from the table to shelf.
the body was at rest (initial kinetic energy=0), we applied 50 Newton force on it for just a second to produce an...
Dear fellows
I have three questions related to the topic “Lifting an object against gravity”.
If we lift an object of mass 5kg we need to apply a little more force than its weight to lift it and suppose we apply 50 N force (gravity is exerting 49 N forces on it) for just a second that...
I am trying to find the domain of this function f(x)=sqrt(x^2 - 2x +5). i am supposing that y=x^2 - 2x +5 and y must be greater of equal to 0. in otherwords where the graph is touching or above x axis. to find where the graph is touching x-axis i am trying to find the x intercept and i get...
I solved this absolute value equation and I am confuse about the answer given in the book for this question, the answer in the book is x > = 0 or x = -2/3 please tell me how can I get this answer from the following solution. Please tell the method which should be true for all such type of...
Suppose we have this absolute value question | x-3 | = 3 – x
If we solve this question we break it as
X - 3 = 3 – x or -(x - 3) = 3 - x
Now if we solve it we come to know that the part on right is true for all real numbers
And the part on the left is true for only 3
I also have read that...