Current Attempt in Progress The uniform semicircular bar of radius r = 120 mm and mass m = 3.2 kg rotates freely about a horizontal axis through the pivot O. The bar is initially held in position 1 against the action of the torsional spring and then suddenly released. Determine the spring stiffness KT which will give the bar a counterclockwise angular velocity w = 4.3 rad/s when it reaches position 2, at which the spring is undeformed. KT Part 1 Answers: Measure gravitational potential energy from point O. Find the gravitational potential energy in positions 1 and 2. Vg1 = Vg3= m i i eTextbook and Media 2 Save for Later Nom Nom Attempts: 0 of 3 used Submit Answer

Please answer 3, 4, 5, 6, 8, 9, 10, 12 1 is 0, 2 is 0, 7 is point A, 11 is 2.  I included a picture of someone who solved but they were mostly incorrect. Please do not answer if the solution set I provided with the incorrect answers was you. I appreciate the attempt, but the solutions for 3, 4, 5, 6, 8, 9, 10, 12 were marked wrong, so unless you have different answers, please do not submit the same incorrect solution set. The wheel is attached to the spring. The mass of the wheel is m=20 kg. The radius of the wheel is 0.6m. The radius of gyration kG=0.4 m. The spring’s unstretched length is L0=1.0 m. The stiffness coefficient of the spring is k=2.0 N/m. The wheel is released from rest at the state 1 when the angle between the spring and the vertical direction is θ=30°. The wheel rolls without slipping and passes the position at the state 2 when the angle is θ=0°. The spring’s length at the state 2 is L2=4 m. (1) If the mass center G is set as the origin (datum), the gravitational…

Please walk me to find the answer and please include the magnitude of the force.

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Please answer from  iv onwards as you have already sent me the answer to the other please show working and correct answer

The control knob of a window air-conditioning unit has four settings. The knobis turned from the OFF position to the HI COOL position. Find the number ofdegrees through which the knob is turned. Round the answer to the nearerwhole degree.

Question 28 Not yet an If a particle is projected vertically upwards, it travels against gravitational force and hence the velocity of the particle will go on decreasing and velocity becomes zero, when it reaches the maximum height. Select one: O True O False hp