Unformatted text preview: 5.122: The normal force that the ramp exerts on the box will be n = w cos  T sin . The rope provides a force of T cos up the ramp, and the component of the weight down the ramp is w sin . Thus, the net force up the ramp is F = T cos  w sin  k ( w cos  T sin ) = T (cos + k sin )  w(sin + k cos ). The acceleration will be the greatest when the first term in parantheses is greatest; as in Problems 5.77 and 5.123, this occurs when tan = k . ...
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 Force, Sin, Cos, parantheses

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