5g cos30°
think about it. when the plane is horizontal, the angle is zero, and the whole weight is down against the plane (cos 0° = 1)
an object of mass 5kg in plane on a plane inclined at an angle of 30 degree to the horizontal. calculate the force on the object perpendicular to the plane when the object is at rest.
2 answers
Why is it that the horizontal is 5gcos30 not 5gsin30
1 answer