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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.
Case A. Determine tension in each cable. (Hint: There is more than one way to define the system.) The cable at left exerts a –30 N force. Write the equation for the sum of the forces in the x-direction. What is the value of FT2? Write the equation for the sum of the forces in the y-direction. What is the force of gravity acting on the box?
calculate the magnitudes and directions of forces provided by ropes under tension that hold objects in equilibrium, calculate the magnitudes and directions of forces provided by ropes under tension that accelerate objects.
Determine the x and y components of the force of tension. Determine the value of the frictional force. Do the same for the normal force. Suppose in the diagram above, the person was pushing down at a 30° angle with 200 N of force. The desk still does not move.
30 Δεκ 2021 · Physics. Tension, Normal Force, Upthrust & Friction. Tension: The force experienced by a cable, rope, or string when pulled, hung, rotated or supported. This is normally labelled as T on free body diagrams. Tension always acts away from the mass. Normal Contact Force:
Justification: Treat the 3 blocks as one unit and use the net force to determine that the blocks will have an acceleration of 1 m/s2. The individual tensions can be calculated by writing out a net force equation for the different systems of blocks, and then using the net force to solve for the unknown tension. Solution 2 kg 1 kg 2 N 4 N 5 N 6 N
Any flexible connector, such as a string, rope, chain, wire, or cable, can exert pulls only parallel to its length; thus, a force carried by a flexible connector is a tension with direction parallel to the connector.
