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ddd [48]
3 years ago
5

A spring is mounted horizontally on an air track, with the left end held stationary. We attach a spring balance to the free end

of the spring, pull toward the right, and measure the elongation. We determine that the stretching force is proportional to the displacement and that a force of 6.0 N causes an elongation of 0.030 m. We remove the spring balance and attach a 0.50 kg object to the end, pull it a distance of 0.040 m, release it, and watch it oscillate in SHM. Find the following quantities:a. The force constant of the springb. The maximum and minimum velocities attained by the vibrating objectc. The maximum and minimum accelerationsd. The velocity and acceleration when the object has moved halfway to the center from its initial positione. The kinetic energy, potential energy, and total energy in the halfway position
Physics
1 answer:
3241004551 [841]3 years ago
5 0

Answer:

Explanation:

a ) A force of 6 N , causes elongation of .03 m

Spring constant

k = 6 / .03

= 200 N / m

b )

Amplitude A = .04 m .

Maximum velocity of a particle in SHM

= ωA where ω is angular velocity and A is amplitude

= \sqrt{\frac{k}{m} } x A

= \sqrt{\frac{200}{.5} } x A

= 20x .04 = 0.8

Maximum velocity of a particle

= 0.8 m ² s

Minimum velocity will be zero at extreme point ( at turning point )

c )

Minimum acceleration is zero at middle point ( equilibrium position )

maximum acceleration

= ω²A

=  k / m x A

= 400 x .04

= 16 m / s

d )

At halfway point velocity will be √ 3 / 2 times the maximum velocity

velocity at mid point

= √ 3 / 2 x max velocity

.866 x

= .866 x  0.8

= .693 m /s

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