Collision Lab
2 answers:
You might be interested in
Missing figure in the problem: https://www.physicsforums.com/attachments/p4-46-gif.117834/
Solution:
part a) The bucket is not moving so the resultant of the forces acting on it is zero. Let's apply the equation of equilibrium. We have:
so
where T=90.5 N is the tension of the rope, and a factor 2 is applied because the string holds the bucket twice. From this we find
part b) Here the situation is different: the string holds the bucket only in one point. Moreover, the bucket is pulled up at constant velocity, so zero acceleration: this means that the resultant of the forces acting on the bucket is zero. Therefore, the equation of equilibrium in this case is
and so, since we know from part a) that
, we can find the new tension T:
Solution:
part a) The bucket is not moving so the resultant of the forces acting on it is zero. Let's apply the equation of equilibrium. We have:
so
where T=90.5 N is the tension of the rope, and a factor 2 is applied because the string holds the bucket twice. From this we find
part b) Here the situation is different: the string holds the bucket only in one point. Moreover, the bucket is pulled up at constant velocity, so zero acceleration: this means that the resultant of the forces acting on the bucket is zero. Therefore, the equation of equilibrium in this case is
and so, since we know from part a) that
Answer:
Explanation:
The density of a material is given by
where
m is the mass of the sample
V is its volume
for the sample of gold in this problem,
m = 38.6 g
Substituting into the formula, we find the density of gold: