The brake pedal ABCD for an automobile has a torsional spring at pin C. The spring has 4000 N-mm/rad stiffness and is prewound by 1/2 of a turn so that contact is made at point E when P= Q = 0. The pedal has negligible weight. Take the value of Pto be 80 N. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 200-1 801D 10° 160 dimensions in mm 90 Determine the value of Q that will cause the pedal to begin to move and the reactions at C. (Round the final answers to four decimal places.) (Do not include a minus sign in your response.) The value of Q that will cause the pedal to begin to move is The horizontal component of the reaction force at C is N+. N \. The vertical component of the reaction force at C is NT.

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 Lo=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 8-30°. The wheel rolls without slipping and passes the position at the state 2 when the angle is 0=0°. The spring's length at the state 2 is L2=4 m. _(kg-m²) (two decimal (9) The mass moment of inertial about the IC center is IIC=_ places) L₂ State 2 State 1

Please help me understand this practice problem.

A 1.005 m chain consists of small spherical beads, eachwith a mass of 1.00 g and a diameter of 5.00 mm, threaded on an elasticstrand with negligible mass such that adjacent beads are separated bya center-to-center distance of 10.0 mm. There are beads at each end ofthe chain. The strand has a spring constant of 28.8 N/m. The chain isstretched horizontally on a frictionless tabletop to a length of 1.50 m,and the beads at both ends are fixed in place. (a) What is the linear massdensity of the chain? (b) What is the tension in the chain? (c) With whatspeed would a pulse travel down the chain? (d) The chain is set vibratingand exhibits a standing-wave pattern with four antinodes. What isthe frequency of this motion? (e) If the beads are numbered sequentiallyfrom 1 to 101, what are the numbers of the five beads that remain motionless?(f) The 13th bead has a maximum speed of 7.54 m/s. Whatis the amplitude of that bead’s motion? (g) If x0 = 0 corresponds to thecenter of the 1st bead and x101 =…