A 5.0 kg block rests on a level floor. A rope pulls it with 20 N at 30° above the horizontal, but it does not lift off. Taking g = 9.8 m/s², what is the normal reaction?

PhysicsMediumHigh School (11–12)Mechanics › Newton's Laws of Motion

A $5.0\ \text{kg}$ block rests on a level floor. A rope pulls it with $20\ \text{N}$ at $30^\circ$ above the horizontal, but it does not lift off. Taking $g = 9.8\ \text{m/s}^2$ , what is the normal reaction?

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