Category: General Physics
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New Force
The figure shows two forces acting on an object at rest. Redraw the diagram, then add a third force that will cause the object to remain at rest. Label the new force F3.
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Involved Forces
A circus clown hangs from one end of a large spring. The other end is anchored to the ceiling. Identify the forces on the clown. => Weight and Tension
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Identify Forces that Apply
A mountain climber is hanging from a rope in the middle of a crevasse. The rope is vertical. Identify the forces on the mountain climber. => Weight and Tension
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Largest and Smallest Mass
A constant force applied to object A causes it to accelerate at 6 m/s2. The same force applied to object B causes an acceleration of 3 m/s2. Applied to object C, it causes an acceleration of 8 m/s2. Which object has the largest mass? B Which object has the smallest mass? C What is the ratio of…
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What is the Magnitude of Net Force?
A 1700 kg car is traveling along a straight road at 19 m/s. Two seconds later its speed is 23 m/s. What is the magnitude of the net force acting on the car during this time? 23-19 = 4 This means that after 2 seconds it is 4m/s faster. After 1 second it would…
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Identify all Forces
Your physics textbook is sliding to the right across the table. Identify all forces acting on the object and draw a free-body diagram
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3 Point Motion Diagram
Consider the three-point motion diagram in the figure. a) Is the object’s average speed between points 1 and 2 greater than, less than, or equal to its average speed between points 0 and 1? => Speed between points 1 and 2 is greater than speed between points 1 and 1. b) Find the average acceleration vector…
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x & y Components
a) What is the x-component of vector E of the figure in terms of the angle θ and the magnitude E? = -Ecosθ b) What is the y-component of vector E of the figure in terms of the angle θ and the magnitude E? = Esinθ c) For the same vector, what is the x-component in terms of the angle…
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What is your Displacement?
While visiting England, you decide to take a jog and find yourself in the neighborhood shown on the map shown in the figure. What is your displacement after running 2.5 km on Strawberry Fields,1.7 km on Penny Lane, and 5 km on Abbey Road? First get the x & y y = 5 cos(40)…