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A person pulls a block w/ a mass m = 57 kg w/ a Force F = 130 N that is appled at an angle 28° above honzontee. If block slid
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(1) fsin28 Na Normal contact fore=N N F 289 Netfs in 28-img=o FC0328 ring 3 Ne= (ing-Isen 28) f (57x9.8 — 130 sinz8) in No

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