A block of wood with a mass of 18 kg slides upward on a roughvertical concrete w

Question

A block of wood with a mass of 18 kg slides upward on a roughvertical concrete wall. If an upward force of 110 N is applied tothe block of wiid at an angle of 70 above the horizon, andthe coefficient of kinetic friction between the block of wood andthe wall is 0.85, then determine the magnitude and direction ofacceleration of the block of wood. A block of wood with a mass of 18 kg slides upward on a roughvertical concrete wall. If an upward force of 110 N is applied tothe block of wiid at an angle of 70 above the horizon, andthe coefficient of kinetic friction between the block of wood andthe wall is 0.85, then determine the magnitude and direction ofacceleration of the block of wood.

Explanation / Answer

The resultant force acting on the block are F=110-(mgsin+fr) F=110-mg(sin+kcos) F=110-18*9.8(sin70+0.85cos70) F=ma a=F/18 Plug in the values to get the right solution. Hence we get by it.

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