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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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