What is the magnitude of the frictional force on m1?

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To determine the magnitude of the frictional force on m1, first calculate the gravitational force acting on m1 using its mass of 4.0 kg and g = 9.81 m/s². The static friction force (Fs) is given by the equation Fs = μs Fn, where μs is the coefficient of static friction (0.40) and Fn is the normal force. The normal force can be found by considering the angle θ (30°) and the weight of m1. The final frictional force can then be derived by analyzing the net forces acting on both m1 and m2, ensuring the calculations align with the physical setup described.
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Please show how you obtained your answer.

You can find the force on m2 using its mass and gravity. The net force on m2 will be the same as the net force on m1. Use the information you're given to find the gravitational force on m1. Once you've got that, find the disparity between the force on m1 and the force on m2.
 

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