Question 1 HK = 0.2 HK = 0.1 In the figure provided, two crates are sliding down a ramp. If the crate at the top has a mass of 10.0 kg and the other has a mass of 20 kg, what is the tension in the string? Assume the string is massless. Question 2 F In the figure provided, there is a crate of mass 4.27 kg on top of another crate of mass 2.10 kg. The coefficient of friction between the lower crate and the floor is HK = 0.290 and the coefficient of static friction between the two crates is Us = 0.840. If the crates start at rest and a force is applied to the right so that both move a distance of 8.71 m, what is the minimal amount of time required in which this can be accomplished without the top crate sliding on the lower crate