7. As shown in the figure below, an object with a weight of 30 N is placed on a slope with a tilt angle of O=30°. If the
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7. As shown in the figure below, an object with a weight of 30 N is placed on a slope with a tilt angle of O=30°. If the
7. As shown in the figure below, an object with a weight of 30 N is placed on a slope with a tilt angle of O=30°. If the object is a lifted by a vertical upward force of F=5 N and the object remains stationary, find the friction force before and after the 5N force is applied. % m 30°
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