a child pulls a rope attached to a stone with a force of 60 Newton.the rope makes an angle of 40 degree to the ground calculate the effective value of the pull tending to move the stone on the ground
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Answered by
20
so horizontal component of 60 N =60cos40
is net pull.
is net pull.
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ritika1203:
value of cos 40??
that is calculated by scientic calculator.
ohkk.. thanku
if you need i can send that too.
yeah it will be cool..plzz
if you need i can send that too.
cos40=0.7660444431
thnku
welcome
Answered by
55
Given that a child pulls the rope attached to a stone with the force of 60 Newton, where the rope makes an angle of 40 degrees to the ground.
Following diagram can be deduced out successfully.
[IMG]
The force is given and the angle of inclination is given.
The effective value of pull tending to move the stone along the ground being asked is the component of the force applied along the x axis, therefore,
F = 60 cos 40°
= 60 x 0.766
= 45.96 N
F = 46 Newton
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