Grade 12Mechanics
why it is easy to pull a heavy object that to push it on a level ground?
why it is easy to pull a heavy object that to push it on a level ground?
2 Answers
noogler
Approved Tutor Answer10 Years agopulling is better than pushing because
pulling
write the fbd of the body.............................
then u will get.............
f=Fcos@ , mg=N+Fsin@ here F makes @ above the ground
N=mg-Fsin@
pushing
write the fbd of the body.............................
then u will get.............
f=Fcos@ , mg=N-Fsin@ here F makes @ below the ground
N=mg+Fsin@
then u will get.............
f=Fcos@ , mg=N-Fsin@ here F makes @ below the ground
N=mg+Fsin@
compare these cases, in pulling case normal reaction is less but in case of pushing N is more
F=applied force
f=frictional force
@=angle made byF with ground
mg=weight of body
N=normal reaction acting on body
Rajat Jain
But there is no information about the angle. so what about @=0
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