Determine the mechanical energy of this object: a 1-kg ball sits on a 10-meter high cliff.

a. the ball isn't moving, so the mechanical energy is zero
b. 10 j
c. 98 j
d. 980 j

also could you explain how you did it because i have know idea how to solve it

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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