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Systems and Center of Mass Practice Test
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Q1
Based on the scenario, determine the motion of the system given its center of mass. Two pucks on frictionless ice are connected by a light string and can slide along the $x$-axis; the string tension is internal to the system. The masses are $m_1=1.0,\text{kg}$ at $x_1=-0.50,\text{m}$ and $m_2=3.0,\text{kg}$ at $x_2=+0.50,\text{m}$. A horizontal external force of $+8.0,\text{N}$ is applied to puck 1, and no other external horizontal forces act. If the system starts from rest, find the CM acceleration immediately after the force is applied.
Based on the scenario, determine the motion of the system given its center of mass. Two pucks on frictionless ice are connected by a light string and can slide along the $x$-axis; the string tension is internal to the system. The masses are $m_1=1.0,\text{kg}$ at $x_1=-0.50,\text{m}$ and $m_2=3.0,\text{kg}$ at $x_2=+0.50,\text{m}$. A horizontal external force of $+8.0,\text{N}$ is applied to puck 1, and no other external horizontal forces act. If the system starts from rest, find the CM acceleration immediately after the force is applied.