A 15-Kg Block Is on a Frictionless Ramp That Is

question 21

Multiple Choice

A 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal.It is connected by a very light string over an ideal pulley at the top edge of the ramp to a hanging 19-kg block,as shown in the figure.The string pulls on the 15-kg block parallel to the surface of the ramp.Find the magnitude of the acceleration of the 19-kg block after the system is gently released?

• A)4.0 m/s²
• B)3.8 m/s²
• C)4.2 m/s²
• D)4.5 m/s²

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Definitions:

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