Do not solve the full qn My question is why is the vector VAot = 1.5 and VAon =-2.6 as shown in the solution. I understand VAot is = -3cos30=-1.5 and VAon = -3sin30 =-2.6 Why is it postive 1.5 instead of negative 1.5 or for VAon why isit negative 2.6 and not positive 2.6? Why is Vb1t = -0.866 and not 0.866 and Vb1n = -0.5 and not 0.5. I dont get it how to visualise the vector direction. Please use a vector diagram with the angles to illustrate
Do not solve the full qn My question is why is the vector VAot = 1.5 and VAon =-2.6 as shown in the solution. I understand VAot is = -3cos30=-1.5 and VAon = -3sin30 =-2.6 Why is it postive 1.5 instead of negative 1.5 or for VAon why isit negative 2.6 and not positive 2.6? Why is Vb1t = -0.866 and not 0.866 and Vb1n = -0.5 and not 0.5. I dont get it how to visualise the vector direction. Please use a vector diagram with the angles to illustrate
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Do not solve the full qn
My question is why is the vector VAot = 1.5 and VAon =-2.6 as shown in the solution. I understand VAot is = -3cos30=-1.5 and VAon = -3sin30 =-2.6
Why is it postive 1.5 instead of negative 1.5 or for VAon why isit negative 2.6 and not positive 2.6?
Why is Vb1t = -0.866 and not 0.866 and Vb1n = -0.5 and not 0.5. I dont get it how to visualise the vector direction.
Please use a vector diagram with the angles to illustrate it.
Transcribed Image Text:4. A sphere A of mass m= 2 kg is released from rest in the position shown
and strikes the frictionless inclined surface of a wedge B of mass m3= 6 kg
with a velocity v,= 3 m/s. The wedge, which is supported by rollers and
may move freely in the horizontal direction, is initially at rest. Knowing
that 0 = 30° and that the coefficient of restitution between the sphere and
the wedge is e = 0.80, determine the velocities of the sphere and of the
wedge immediately after the impact.
A
en
へ
3ミ - + è. = usá-262,
こ
NAO
ex
AD
VAO
NAI
Vo
こ
В
VBi et + V81
30°
こ
BI
-o.866 V8l ex - 0.S Ver en
it
VA」こ Va
くク
く。
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