What was increase in thermal energy of block-floor system

Reference no: EM13545992

A worker pushed a 27 kg block9.2m along a level floor at constant speed with a force directed27°below the horizontal.

(a) If the coefficient of kinetic friction is 0.20, how much work was done by the worker's force?
_______________ J

(b) What was the increase in thermal energy of the block-floor system?
_______________ J

Reference no: EM13545992

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