I need these answered conceptually. 4) What happens to rotational kinetic energy when the moment of...
Match the units with the rotational quantity: Moment of inertia Angular acceleration Torque Rotational kinetic energy Angular Momentum a. kg·m2/s b. J c. N·m d. kg m2 e. rad s-2
This problem illustrates the two contributions to the kinetic energy of an extended object: rotational kinetic energy and translational kinetic energy. You are to find the total kinetic energy Ktotal of a dumbbell of mass mwhen it is rotating with angular speed ? and its center of mass is moving translationally with speed v. (Figure 1) Denote the dumbbell's moment of inertia about its center of mass by Icm. Note that if you approximate the spheres as point masses of...
An ice- skater is initially spinning at an angular speed ω = 1.35 revolutions/s with a rotational inertia Ii = 2.30 kg.m2 with her arms extended. When she pulls her arms in, her rotational inertia is reduced to If=1.05 kg.m2 . Assume no external torques act. a) Determine her initial angular speed in rad/s. (1 marks) b) Calculate her final angular speed in RPM (4 marks) c) Calculate the period of rotation when she is at her final speed (1...
Calculate the moment of inertia, the magnitude of the rotational angular momentum, and the energy in the J - 4 rotational state for 14N2 Calculate the moment of inertia, the magnitude of the rotational angular momentum, and the energy in the J - 4 rotational state for 14N2
5. Find the rotational kinetic energy of a golf club swing given the following measurements: moment of inertia of the club is 15kgm', mass of the club is 0.30kg, and the distance between the center of mass of the club and the axis of rotation is 80cm. The golf club is rotating at 360 degrees/sec.
Calculate the rotational inertia of a wheel that has a kinetic energy of 47.8 kJ when rotating at 254 rev/min.
Calculate the rotational inertia of a wheel that has a kinetic energy of 40.4 kJ when rotating at 742 rev/min.
An object rolls down a hill such that 2/5 of its kinetic energy is rotational. Determine an expression for the object's moment of inertia in terms of its mass, m, and radius, r. (Use any variable or symbol stated above as necessary.)
If a rigid body is rotating about its central axis with a rotational kinetic energy of 3.78 J and it has a moment of inertia equal to 5.08 kg*m^2, what is its angular momentum? Answer in kg*m^2/s.
Calculate the rotational kinetic energy in the motorcycle wheel if it’s angular velocity is 110 rad/s. Assum m= 14.5 kg, R1= 0.29 m, and R2= 0.32 m. Moment of inertia for the wheel I= Unit = KE rot =. Unit=