A 30-Kg Brick Rests on a Perfectly Smooth Ramp Inclined at at 34°

question 85

Multiple Choice

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal.The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick.The spring has a spring constant (force constant) of 120 N/m.By how much does the spring stretch with the brick attached?

• A)360 cm
• B)240 cm
• C)14 cm
• D)24 cm
• E)36 cm

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