PHYSICS 7E Lecture Notes - Lecture 5: Circular Motion, Coil Spring

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ochrerhinoceros257

17 Apr 2018

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Physics 7e - lecture 5 - oscillating motion. The kinetic energy can be found by. K = mv = m a sin ( t + . The elastic potential energy can be found by. U = kx = ka cos ( t + . The total energy is k + u = ka . The total mechanical energy is constant and is proportional to the square of the amplitude. Energy is continuously being transferred between potential energy stored in the spring and the kinetic energy of the block. The total mechanical energy e = k + u is conserved in shm: A 50. 0-g object connected to a spring with a force constant of 20. 0 n/m oscillates on a horizontal, frictionless surface with an amplitude of 2. 00 cm. Find (a) the total energy of the system and (b) the speed of the object when the position is 1. 00 cm.

Related Questions

Which of the following statement is not true regarding a mass-spring system that moves with simple harmonic motion in the absence of friction?

a)The total energy of the system remains conserved.

b) The energy of the system is continually transformed between kinetic and potential energy.

c) The total energy of the system is proportional to the square of the amplitude.

d) The potential energy stored in the system is greatest when the mass passes through the equilibrium position.

e) The velocity of the oscillating mass has its maximum value when the mass passes through the equilibrium.

salmonhare521

Which of the following statements is not true regarding a mass-spring system that moves with simple harmonic motion in the absence of friction?

(a) The total energy of the system remains constant,

(b) The energy of the system is continually transformed between kinetic and potential energy,

(d) The potential energy stored in the system is greatest when the mass passes through the equilibrium position

(e) The velocity of the oscillating mass has its maximum value when the mass passes through the equilibrium position.

blueworm505

A block of mass 6o kg is sitting on a platform that in turn sits ona spring with a spring constant k=2500 N/m. The block is initiallyat rest. Assume that the gravitational
potential energy and elastic potential energy of the system is zeroat this point.

a. What is the total mechanical energy of the system?

The platform is depressed a distance of 0.3 m and held there.

b. What are the kinetic, gravitational potential, and elasticpotential energies of the system?

c. What is the new mechanical energy of the system?

The platform is released, ejecting the block in the verticaldirection .

d. What are the kinetic, gravitational potential, and elasticpotential energies when the mass reaches its highest point?

e. How high above the platform does the mass go (measure from theoriginal un-depressed position)?

PHYSICS 7E Lecture Notes - Lecture 5: Circular Motion, Coil Spring

PHYSICS 7E Full Course Notes

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