Nội dung text 2025 North Sydney Girls High School - X2 - Trial - Solutions.pdf
− 4 − 4 An object of mass 6 kg is placed on a smooth ramp that is inclined at an angle of 22 to the horizontal. It is pulled up the ramp by a force of 75 Newtons as shown in the diagram. The acceleration due to gravity is 2 9.8 ms− . Which of the following is closest to the acceleration of the block? A. 2 3.4 ms− B. 2 8.8 ms− C. 2 16.2 ms− D. 2 21.6 ms− 75 6 9.8 sin 22 6 75 6 9.8 sin 22 75 6 9.8 sin 22 6 8.8 Fnet a a a = − = − − =
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