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AP Physics C: Mechanics
3.5 Power
AdvancedMCQMathematicalConceptual18.4k
A side-view diagram of a right-triangular wedge representing an incline. The horizontal base extends to the right, and the incline surface rises to the right at an acute angle labeled \(\theta\) relative to the base. A rectangular block of mass \(m\) rests on the inclined surface. An arrow labeled \(T\) originates from the center of the right face of the block and points upward along and parallel to the inclined surface. A separate dashed arrow labeled \(v\) is positioned above the block, pointing upward along and parallel to the incline, indicating the direction of motion. An arc with angle label \(\theta\) is drawn between the horizontal base and the inclined surface at the lower left corner. No other labels, lines, text, or axes appear.
A block pulled at constant speed \(v\) up an incline of angle \(\theta\).
A block of mass \(m\) is pulled at a constant speed \(v\) up a rough ramp inclined at an angle \(\theta\) above the horizontal by an applied force of magnitude \(T\) directed parallel to the incline. The coefficient of kinetic friction between the block and the ramp is \(\mu = 1.0\). Three separate trials are conducted with identical blocks and speeds, but with different ramp angles: Trial 1 with \(\theta_1 = 30^\circ\), Trial 2 with \(\theta_2 = 45^\circ\), and Trial 3 with \(\theta_3 = 60^\circ\). Which of the following correctly ranks the instantaneous power \(P_1\), \(P_2\), and \(P_3\) supplied by the applied force in each trial?

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