Physics, please solve question 16 Q.15: The angular position ($ all) of a swinging (+j) rigid body is given by:e(t) = (-4t3+ 2t2 + 100t +5) radThe magnitude of the angular velocity (in rad/s) of this body att= 2 sec is:A. 9.8В. 28C. 60Q.16: At t = 0, a wheel (Jac) rotating about a fixed axis at a constant angular acceleration has anangular speed of 2 rad/s. Two seconds later it has turned through 8 complete revolutions ().The magnitude of the angular acceleration (in rad/s) of this wheel is:[Hint: one revolution equals 2n rad).D. 92E. 112A. 2.65B. 50.0Q.17: The disc in the adjacent figure has radius R and rotates () with an angular speed w about anaxle () passing through point o and perpendicular ( gac) to the plane of the disc. Let w, a and Vrepresent the angular speed, angular acceleration and linear speed,respectively ( e). If points A, B, and C lie at the rim (a) of the disc,then which of the following statements is entirely (IS) correct:A. VA = VB = Vc and wa = WB = WcB. VA = VB = Vc and wa > We >WcC. aA >aB > ac and VA = Vg = VcD. WA = WB = wcand Vc> V8 > VAE. WA> WB > wc and VA> V8 > VcQ.18: A rigid body rotates around an axis that passes through the origin and perpendicular to itssurface. A force F = (2î + i-k)N acts on the rigid body at the point (1, -1, 1) m.С. 13.7D. 23.1E. Zero%3DThe magnitude of the torque (in N.m) due to this force calculated about the origin is:В. 6.5C. 4.5:D. 18E. 23A. 2.1Q.19: A 4-kg particle has its position in the XY-plane given by:the angular momentum (measured in kg.m/s )of the particle with respect to the origin at t = 1 sec is:C. 8F(t) =[(21 + 5)i +(t?-3t +1)i], where t is in seconds and r is in meters. The magnitude ofE. 12D. 10В. 6A. 20Q.20: In the adjacent figure, a very light rope is wrapped around a wheel of radiusR = 3 m. The wheel can rotate around an axle that is passing through its centerand perpendicular to its surface. A block of mass 14 kg is suspended (a) fromthe end of the rope. When the system is released from rest it is observed that theblock descends (a) with constant acceleration of magnitude 5 m/s?The moment of inertia (measured in ikg.m) of the wheel relative to the rotationaxle is:%3DС. 120.9B. 37.2A. 9.8E. 53.8.D. 240.3

To solve the question we use the equation for law of motion. It is given as θ = ωt+12αt2, where θ =…

at t= 2 sec is: C. 60 D. 92 E.112 Q.16: At t = 0, a wheel (Jac) rotating about a fixed axis at a constant angular acceleration has an angular speed of 2 rad/s. Two seconds later it has turned through 8 complete revolutions ( The magnitude of the angular acceleration (in rad/s) of this wheel is: [Hint: one revolution equals 2n rad). A. 2.65 B. 50.0 C. 13.7 D. 23.1 E. Zero Q.17: The disc in the adjacent figure has radius R and rotates (4) with an angular axle ( ) passing through point o and perpendicular represent the angular