show work please 00000000000000 3. A mass m on a horizontal surface with mild fr
ID: 3893000 • Letter: S
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show work please
00000000000000 3. A mass m on a horizontal surface with mild friction is attached to spring with spring constant k etic an ideal k. When the spring is compressed by a distance d to the left of its equilibrium position and released (as shown above) the mass starts to slide back to the right. (Lenore any static friction that may be present when the mass starts from rest) a. (3 pts.) Find an expression for the acceleration of the mass as function ofits position r, as the mass slides back a to its equilibrium position (between r -d and r 0). mathematical constants. Show your work. by distance compressed. would your (Thought question lnot for creditl If the spring were stretched d instead of answer be different? How? b. (I pt.) When is the acceleration largest? C. constant at all values of r A. at r -d B. "0?Explanation / Answer
a) kx - uk*mg = ma
==> a = (k/m)*x - uk*g
here f = uk*N and N = mg so f = uk*mg
b) a is largest at x = 0 so the correct option is B
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