MHS Simple Harmonic Motion spring-mass system Solved questions MED 049
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A topic that is often requested here on the channel and that causes many doubts is SHM (simple harmonic motion). In the class, Professor Ivys explains in detail 5 examples about the spring-mass system. Follow our playlist Physics in Questions • Physics in Questions #ENEM #MED #Medicine subscribe to the channel and activate notifications Questions solved in this video: (UEL PR) A body of mass m is attached to the end of a helical spring that has the other end fixed. The body is moved away to point A and, after being abandoned, oscillates between points A and B. It can be correctly stated that: a) acceleration is zero at point 0. b) acceleration is zero at points A and B. c) velocity is zero at point 0. d) force is zero at points A and B. e) force is maximum at point 0. (MACKENZIE SP) A body with a mass of 250 g is in equilibrium, attached to a helical spring with negligible mass and elastic constant k equal to 100 N/m, as shown in the figure below. Friction between the surfaces in contact is negligible. The spring is stretched, with the body to point A, and the assembly is abandoned at that point, with zero velocity. In an interval of 1.0 s, measured from this instant, the body will return to point A: a) once b) twice c) three times d) four times e) six times (UFRS) A laboratory technician purchased a spring with a certain spring constant. To confirm the value of the spring constant specified by the manufacturer, he performed the following test: he fixed the spring vertically to the ceiling by one of its ends and, at the other end, suspended a block with a mass equal to 10 kg. Immediately after suspending the block, he observed that it oscillated at a frequency of 2 Hz. Calculate the value of the spring constant. a) 160 2 N/mb) 16 2 N/m c) 1.6 2 N/m d) (16 )2 N/m and) 0.16 2 N/m (UFPB) A young student decides to build a clock using a spring with spring constant k = 72 N/m. Considering = 3, for each oscillation to correspond to one second the student must attach to the spring a mass of: a) 1 kg b) 2 kg c) 3 kg d) 4 kg e) 5 kg (UECE) An oscillating mass-spring system has a mechanical energy equal to 1.0 J, an oscillation amplitude of 0.5 m and a maximum speed equal to 2 m/s. Therefore, the spring constant, mass and frequency are, respectively, equal to: a) 8.0 N/m, 1.0 kg and 4/ Hz b) 4.0 N/m, 0.5 kg and 4/ Hz c) 8.0 N/m, 0.5 kg and 2/ Hz d) 4.0 N/m, 1.0 kg and 2/ Hz
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