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4.14. A block with mass m sits on a, frictionless plane inclined at, angle 0, as shown in Fig. 4.7. If, the plane is accelerated to the, right with the proper, acceleration that causes the, block to remain at the same, position with respect to the, plane, what is the normal force, between the block and the, plane?, , (a) mg, , (b) mg sin 0, (c) mg/ sin 0, (d) mg cos 8, (e) mg/ cos 8, , Figure 4.7