A wooden log has to be carried by two people.If one of them is strong and another weak, how will they carry the log? Show with a diagram and also give reason
Answers
Answer:
when the center of mass is above the support point, then the lower point will carry more of the weight since it is acting closer to the center of mass (x1<x2x1<x2) and torque balance requires that F1x1=F2x2F1x1=F2x2. Conversely, if the center of mass is below the support, the higher point will carry more of the weight when the object is tilted.
Understanding this diagram really helps when you are moving large objects up or down the stairs: the lower person should grab the object higher up (say the arms of the couch) if you want to achieve more equal weight distribution.
ADDENDUM
In the second case, if the person on the right pushes against the couch, it is possible for the person on the left to end up carrying the entire weight of the couch. In the case of carrying things up stairs that can easily happen... Which is why movers often use webbing straps to permit/ensure a more equal distribution of effort (and to allow lifting with shoulders/back/knees and not just arms).
all carbon atoms have the atomic number 6 but some have the Mass number 12 and others have the Mass number of 14 a) what's same. b) different about the structure of these two type of carbon atoms
Answer:
THE WEAK ONE WILL CARRY THE LIGHTER PART AND THE STRONGER, THE HEAVIER PART.
BUT IF THE BOTH PART ARE EQUALLY HEAVY THAN THE WEAKER WILL HOLD IT FROM FRONT AND HEAVIER IN MIDDLE.