A crane does 12,500 Joules of work lifting a 360 kg a total distance of 500 meters. What is the total force needed by the crane?

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

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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i would say