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PHYSICS 11 FORCES & NEWTON’S LAWS WORKSHEET 1 1. Phoebe Physics pulls a wagon with a force of 80 N. a) What is the net force if the force of friction between the wagon and the ground is 12 N? b) If she uses 80 N to pull the wagon through a mud puddle, and the net force on the wagon is 38 N, what friction force acts on the wagon? 2.
What is a force? A force is simply a push or a pull. A force is a vector, so it has a direction. The SI unit of force is the newton (N). 1 N = 1 kg m/s2. In addition, a force represents an interaction between objects. For instance, the Earth exerts a force on the pen and the pen exerts a force on the Earth. Each object involved in an
Consider two objects A and B. The force which object A exerts on object B is equal and opposite to the force which object B exerts on object A: FAB = −FBA This law is popularly stated as the “law of action and reaction”, but in fact it deals with the forces between two objects.
Draw a diagram to show the forces acting on the block. Show that the normal reaction force between the block and the plane has magnitude 6.36 newtons, correct to three significant figures.
Newton's Laws: Forces and Motion. A force is a push or a pull. A force is a vector : it has a magnitude and a direction. Forces add like vectors, not like scalars. Example: Two forces, labeled. same magnitude. F1 and F2, are both acting on the same object. The forces have the.
Friction, Inclines and Multi-Body Problems. Do these problems on separate sheets of paper. For each of the problems below, you must begin your solution with a clear, accurate free body diagram. Show your solutions step by step starting with the basic conceptual equation (Newton’s 2nd Law). 1.
A force is a push or a pull. Force is a vector. It has a size and a direction. Forces add like vectors, not like scalars. Example: Two forces, labeled F1 and F2, are both acting on the same object. The forces have the. same magnitude. 2 1 F F F and are 90o apart in direction: F.
