HEL When Friction is created between two objects create
(two things)

When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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