Date: А Force of 3 N and 4 N act on a body simultaneusly at right angle to each other of mass 15kg initially at rest. findworkdone in first second journey.
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Answer:
F'= 3N
F"= 4N
M=15 kg
As the forces are acting at an angle 90
0
so the net force will be
F= √F'° +F°"+F×cos 90°
F= √9+16 +0
F =√25
F=5N
W=F/M
W=5\15
W=1/3 kgm/s
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