5. A mass m₁ = 18.0 kg is connected by a light string that passes over a pulley of mass M = 11.5 kg to a mass m₂ = 7.50 kg sliding on an inclined surface that makes an angle of 21° with the horizontal (see figure). The coefficient of kinetic friction between the mass m₂ and the surface is 0.20. There is no slippage between the string and the pulley. What is the magnitude of the tension that is acting on mass m₁? (The moment of inertia of the N 268 sc2368 Sc2alley is 1/2Mr².) se2368 sc2368 sc m₂ sc2368 sc2368 scx368 sc23 se2368 sc2368 sc2308 st2368 sc23 sc2368c2368 sc2368 sc2² m₁ 68 sc2368 sc2368 sc2368 s 368 sc2368 s

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!