A bauticle performing uniform circular metion has angulay momentum (L). If it's angular frequency is doubled & its kinetic energy halved, then the angular momentum es mello @ 4/4 84/2 2L @ 4L 1
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- The relative angle at the knee changes from 180 degrees to 95 degrees during the knee flexion phas of a squat exercise. If 10 complete squats are performed, what is the total angular distance and the total angular displacement undergone at the knee?The disk rotates around a fixed axis so that the dependence of the angle of rotation of the radius of the disk on time is given by the equation ϕ = At2, where A = 0.5 rad / s2. Determine by the end of the second second: 1) the angular velocity of the disk; 2) angular acceleration of the disk; 3) for a point located at a distance of 80 cm from the axis of rotation, the tangential at, normal an and the full acceleration a.A ficle is located at position r=3î+7g+4€ par %3D 3. with respect to the origin. It has linear momentum D= -î +9Te ka ms! what is its angular momentum?
- The 184-kg spool has a radius of gyration about its mass center of kg = 300 mm. If the couple moment is applied to the spool and the coefficient of kinetic friction between the spool and the ground is μ = 0.2, determine the angular acceleration of the spool, the acceleration of G and the tension in the cable. ( Figure 1) Figure 0.4 m 0.6 m B M = 450 N.m 1 of 1 Determine the angular acceleration of the spool. Express your answer to three significant figures and include the appropriate units. α = Submit Part B aG= O Value X Incorrect; Try Again Submit Part C μà Determine the acceleration of G. Express your answer to three significant figures and include the appropriate units. O Previous Answers Request Answer O μA Value Units Request Answer ? μA Units Determine the tension in the cable. Express your answer to three significant figures and include the appropriate units. ? ?The following figure shows four bars of equal mass rotating about their center. Rank their rotational kinetic energies from largest to smallest. L Wo 4/12 2010 WAWA 412 240 4 w, 13Refer to the question below.
- An Earth satellite has its apogee at 2750 km above the surface of Earth and perigee at 490 km above the surface of Earth. At apogee its speed is 830 m/s. What is its speed at perigee? Earth's radius is 6378 km (see below). A M VpA solid brass ball with radius r = 10cm rolls smoothly from the top of the roof that is 6m long and inclined 20°.Using energy conservation law, calculate a) the angular velocity of the ball at the edge, b) the velocity of the centerof mass of the ball at the same moment. The moment of inertia of a solid sphere rotated about its center isI=2/5MR2Compute the combined moment of the two 80-lb forces about (a) point O and (b) point A. The moment is positive if counterclockwise, negative if clockwise. Assume a = 5.0 in., b=2.7 in., F-80 lb. y 1 F Answers: (a) Mo i (b) MA-i Ib-in. lb-in.