57 A 230 kg crate hangs from the end of a rope of length L = 12.0 m. You push horizontally on the crate with a varying force F to move it distance d 4.00 m to the side (Fig. 7-44). (a) What is the magnitude of F when the crate is in this final position? During the crate's displacement, what are (b) the total L Figure 7-44 Problem 57. work done on it, (c) the work done by the gravitational force on the

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