Physics, 21.04.2020 19:57 angelalovelis

Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To keep the spring stretched or compressed an amount x, a force along the x-axis with x-component Fx=kx−bx2+cx3 must be applied to the free end. Here k=100N/m, b=700N/m2, and c=12,000N/m3. Note that x>0 when the spring is stretched and x<0 when it is compressed.(Many real springs behave in a similar fashion.)

(a) How much work must be done to stretch this spring by 0.050 m from its unstretched length?
(b) How much work must be done to compress this spring by 0.050 m from its unstretched length?
(c) How much work must be done to move the spring from being compressed by 0.070 m to being stretched by 0.030 m, assuming the end moves with constant speed during the motion?

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 17:40

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.

Answers: 2

Answer

Physics, 23.06.2019 00:00

When flexing to a reflective style, one should be specific, brief and to the point, and maintain a fast and decisive pace?

Answers: 2

Answer

Physics, 23.06.2019 02:30

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

Answers: 3

Answer

Physics, 23.06.2019 02:30

Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?

Answers: 3

Answer

You know the right answer?

Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To...

Questions