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As shown in the figure, a uniform plank rests on two supports in equilibrium. The plank's center of mass is at the midpoint of the plank. A block is placed on the left end of the plank. The magnitude of the gravitational acceleration is g = 9.80 m/s2 . L = 6.00 m , D = 4.80 m , mplank = 35.5 kg ,mblock = 6.0 kg. Choose the RIGHT support as rotational axis. It is good practice to mark the rotational axis on the drawing. In the following steps, you will find the magnitude of the two normal forces, N1 and N2.

Part A - Relative to this rotational axis (RIGHT support), which of the following contains the correct torques of the two forces, $N_{1}$ and $N_{2}$ including proper signs? $N_{1}$ and $N_{2}$ represent the magnitudes of these two forces Lever arm calculations are in the hints. If you make ONLY ONE attempt in a hint, even if it is wrong, you don't lose partial credit. In a hint, if you make 2 attempts and both are wrong, or if your "request answer", you lose partial credit. View Available Hint(s) As shown in the figure, a uniform plank rests on two supports in equilibrium. The plank's center of mass is at the midpoint of the plank. A block is placed on the left end of the plank. The magnitude of the gravitational acceleration is $g=9.80m/s_{2}$. $L=6.00m,D=4.80m,m_{plank}=35.5kg,m_{block}=$ $6.0kg$ Choose the RIGHT support as rotational axis. It is good practice to mark the rotational axis on the drawing. In the following steps, you will find the magnitude of the two normal forces, $N_{1}$ and $N_{2}$. torque of $N_{1}=0$, torque of $N_{2}=+L∗N_{2}$ torque of $N_{1}=0$, torque of $N_{2}=−L∗N_{2}$ torque of $N_{1}=+D_{⋆}N_{1}$, torque of $N_{2}=0$ torque of $N_{1}=+(L−D)_{⋆}N_{1}$, torque of $N_{2}=+L∗N_{2}$ torque of $N_{1}=−(L−D)_{∗}N_{1}$, torque of $N_{2}=−L_{∗}N_{2}$ torque of $N_{1}=−D_{⋆}N_{1}$, torque of $N_{2}=0$ torque of $N_{1}=+(L−D)_{⋆}N_{1}$, torque of $N_{2}=−L∗N_{2}$ torque of $N_{1}=−(L−D)_{⋆}N_{1}$, torque of $N_{2}=+L_{∗}N_{2}$ Part B - Relative to this rotational axis (RIGHT support), what is the torque of the weight of the PLANK? Include a proper sign. Lever arm calculation is in the hints. If you make ONLY ONE attempt in a hint, even if it is wrong, you don't lose partial credit. In a hint, if you make 2 attempts and both are wrong, or if your "request answer", you lose partial credit. Torque: Keep 2 digits after the decimal point, in $Nm$
Part C - Relative to this rotational axis (RIGHT support), what is the torque of the weight of the BLOCK? Include a proper sign. Lever arm calculation is in the hints. If you make ONLY ONE attempt in a hint, even if it is wrong, you don't lose partial credit. In a hint, if you make 2 attempts and both are wrong, or if your "request answer", you lose partial credit. Torque: Keep 2 digits after the decimal point, in $Nm$ As shown in the figure, a uniform plank rests on two supports in equilibrium. The plank's center of mass is at the midpoint of the plank. A block is placed on the left end of the plank. The magnitude of the gravitational acceleration is $g=9.80m/s_{2}$. $L=6.00m,D=4.80m,m_{plank}=35.5kg,m_{block}=6.0kg $ Choose the RIGHT support as rotational axis. It is good practice to mark the rotational axis on the drawing. In the following steps, you will find the magnitude of the two normal forces, $N_{1}$ and $N_{2}$. Part D - Find the magnitude of the force $N_{1}$ Torque: Keep 2 digits after the decimal point, in Newtons Part E - Find the magnitude of the force $N_{2}$ Torque: Keep 2 digits after the decimal point, in Newtons