A window washer pulls herself upward using the bucket-pulley apparatus shown in Fig. 4-40. The mass of the person plus the bucket is 68 kg. Figure…

A window washer pulls herself upward using the bucket-pulley apparatus shown in Fig. 4-40. The mass of the person plus the bucket is 68 kg. Figure 4-40.(a) How hard must she pull downward to raise herself slowly at constant speed? (N)(b) If she increases this force by 10 percent, what will her acceleration be (upward

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