1 Problem 9 2 A taut string connects a crate with mass M = 7 kg to a crate with mass M2 = 13 kg on a frictionless surface (see the figure below). A force F =16 N pulls to the right on crate M, causing both boxes to accelerate. M2 M F 1) What is the force of the string acting on M2? Define a force pointing to the right as positive. (Express your answer to three significant figures.) Submit 2) What is the force of the string acting on M? Define a force pointing to the right as positive. (Express your answer to three significant figures.) Submit N N