WebA playground merry-go-round has radius 2.40 m and moment of inertia 2100 kg•m^2 about a vertical axle through its center, and it turns with negligible friction. A child applies an 18.0-N force tangentially to the edge of the merry-go-round for 15.0 s. If the merry-go-round is initially at rest (b) How much work did the child do on the merry-go-round? WebFind the kinetic energy of the merry-go-round after 4.0 s. (Assume it is a solid cylinder.) A horizontal 800-N merry-go-round of radius 1.80 m is started from rest by a constant horizontal force of 45 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go-round after 5.0 s. (Assume it is a solid cylinder.)
A horizontal 668 N merry-go-round of radius 1.39 m is ... - Study.com
WebThe merry-go-round accelerates from rest up to 0.4 rev/s in 10 s. ... If the system rotates at 5 rev/s, what is its rotational kinetic energy? 55. (a) Calculate the rotational kinetic energy … WebWhich sphere has a greater rotational kinetic energy? Solution The hollow sphere, ... 47. A man stands on a merry-go-round that is rotating at 2 rad/s. If the coefficient of static ##### friction between the man’s shoes and the merry-go … construction work mexico
4-6: Rotational Work, Energy, Power - efcms.engr.utk.edu
WebA merry-go-round starts from rest and moves with angular velocity. During its motion, the energy possessed by it is the rotational kinetic energy. From the work-energy theorem, … WebThe source of this additional rotational kinetic energy is the work required to pull her arms inward. Note that the skater’s arms do not move in a perfect circle—they spiral inward. This work causes an increase in the rotational kinetic energy, ... A merry-go-round at a playground is rotating at 4.0 rev/min. WebThis is true for both translational AND rotational kinetic energy. # So, when we push on the merry-go-round, ... ## Example Problem A playground merry-go-round has a radius of … education testing and assessment