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5) A constant force F applied to the low...

5) A constant force F applied to the lower block of mass 15 kg makes it slide between the upper block of mass 5 kg and the table below, as shown. The coefficients of static (us) and kinetic (uk) friction between the lower block and the table are 0.5 and 0.4 respectively and those between the two blocks are 0.3 and 0.1. The accelerations of the upper and the lower blocks are respectively 5 kg 15 kg (a) 1.96 m/s² and 1.96 m/s? (c) 0.98 m/s and 0.49 m/s b) 1.96 m/s and 3.92 m/s? d) 0.98 m/s and 1.96 m/s? 3

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