A block is at rest on a horizontal frictional surface. A string is attached to the block, and is pulled with a force of

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answerhappygod
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A block is at rest on a horizontal frictional surface. A string is attached to the block, and is pulled with a force of

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A block is at rest on a horizontal frictional surface. A stringis attached to the block, and is pulled with a force of 65.4 N atan angle theta above the horizontal. After the block is pulledthrough a distance of 1.35 m, its speed is 1.69 m/s, and 85.0 J ofwork has been done on it. What is the work done by normal force inthis case? Explain.
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