The two masses m 1 = 3 . 00 k g and…
The two masses m 1 = 3 . 00 k g and m 2 = 2 . 00 k g in Fig. 2 are released with a speed 4 . 00 m s . (a) If the horizontal surface is frictionless, (a) what is the speed of m 2 after m 2 has fallen 1 . 50 m ? (b) If the coefficient of the kinetic friction is μ k = 0 . 500 on the horizontal surface, what is the speed of m 2 after m 2 has fallen 1 . 50 m ? If the coefficient of kinetic friction on the horizontal surface is unknow and m 2 is moving with a speed of 3 . 90 m s after m 2 has fallen 1 . 50 m , (c) how much work is done during this time interval by the frictional force on m 1 and (d) what is the kinetic friction of the surface? (e) What is the distance that m 2 has fallen when the system comes to rest if the coefficient of kinetic friction of the horizontal surface is the one determined in (d) and the length of the horizontal surface and the height of the surface is large enough for the process? (The string is an ideal string, and the pulley is an ideal pulley.) t3_q12_phys2425.v01.docx