6. Intro to Forces (Dynamics)

A 6-kg bucket of water is being pulled straight up by a string at a constant speed. What is the tension in the rope?

An object that weighs 75 N is pulled on a horizontal surface by a horizontal pull of 50 N to the right. The friction force on this object is 30 N to the left. What is the acceleration of the object if its mass is 7.5 kg?