cal changed rope upon the hill with a roug t: µs = 0.6 and µx = 0.4 respectively). Af rows a 10-kg pestle with a velocity vp tow

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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g=9.81m/s^2

4. As depicted by a below figure, bored Mr. PM attempts to pull a 70-kg mortar tired with a
non-physical changed rope upon the hill with a rough terrain (static and dynamic friction
coefficient: µ, = 0.6 and µx = 0.4 respectively). After 4 seconds of pulling, as well bored
Mr. PY throws a 10-kg pestle with a velocity v, toward the mortar and later impacts the
mortar severely. Note that tension is initially zero and varying over time as shown by the
below plot of T = 400tz. Determine
%3D
a) draw Free body diagram, impulse-momentum diagram, and impact diagram – 3 marks.
b) the time the mortar starts moving – 3 marks.
c) velocity of the mortar at 4 seconds of time – 3 marks.
d) velocity of the pestle to stop the mortar from moving, if it impacts the mortar at 4 seconds
of time, and coefficient of restitution is zero – 1 mark.
Pestle
30
Mr. PY
Up
Mortar
T (N)
800
T = 400 t'/2|
Mr. PM
30
-t (s)
4
Transcribed Image Text:4. As depicted by a below figure, bored Mr. PM attempts to pull a 70-kg mortar tired with a non-physical changed rope upon the hill with a rough terrain (static and dynamic friction coefficient: µ, = 0.6 and µx = 0.4 respectively). After 4 seconds of pulling, as well bored Mr. PY throws a 10-kg pestle with a velocity v, toward the mortar and later impacts the mortar severely. Note that tension is initially zero and varying over time as shown by the below plot of T = 400tz. Determine %3D a) draw Free body diagram, impulse-momentum diagram, and impact diagram – 3 marks. b) the time the mortar starts moving – 3 marks. c) velocity of the mortar at 4 seconds of time – 3 marks. d) velocity of the pestle to stop the mortar from moving, if it impacts the mortar at 4 seconds of time, and coefficient of restitution is zero – 1 mark. Pestle 30 Mr. PY Up Mortar T (N) 800 T = 400 t'/2| Mr. PM 30 -t (s) 4
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