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Statement of a problem № 2510

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A block moves up a 30° incline under the action of certain forces, three of which are shown in Fig. 6-2. F1 is horizontal and of magnitude 40 N. F2 is normal to the plane and of magnitude 20 N. F3 is parallel to the plane and of magnitude 30 N. Determine the work done by each force as the block (and point of application of each force) moves 80 cm up the incline.

Solution:
A block moves up a 30° incline under the action of certain forces, three of whi

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