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A platform of mass M = 4 kg lies on the floor with coefficient of static friction between floor and platform μs = 0,1. On the platform is a box with mass m = 1 kg. Surface between the box and platform is frictionless, a massless spring attaches the box to the platform that has spring constant of k = 400 N/m. Innitially the box is at rest but then it is pressed to the right so itreceivesan initial velocity of V (a) What is the equation for the maximum force of the spring as a function of V? (b) What is the maximum value of V so the platform stays motionless?

A platform of mass M = 4 kg lies on the floor with coefficient of static friction between floor and platform μs = 0,1. On the platform is a box with mass m = 1 kg. Surface between the box and platform is frictionless, a massless spring attaches the box to the platform that has spring constant of k = 400 N/m. Innitially the box is at rest but then it is pressed to the right so itreceivesan initial velocity of V (a) What is the equation for the maximum force of the spring as a function of V? (b) What is the maximum value of V so the platform stays motionless?

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A platform of mass M = 4 kg lies on the floor with coefficiant of static friction between floor and platform μ s = 0 , 1 . On the platform is a box with mass m = 1 kg . Surface between the box and platform is frictionless, a massless spring attaches the box to the platform that has spring constant of k = 400 N / m . Innitially the box is at rest but then it is pressed to the right so itreceivesan initial velocity of V (a) What is the equation for the maximum force of the spring as a function of V ? (b) What is the maximum value of V so the platform stays motionless?

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