Practice Test: Mr. Rogers AP Physics CNewton's Laws 


Online Quiz  Newton's Law 76372552 

Mr. Rogers AP Physics Big Beautiful Bodacious Newton's Law Practice Test 

Assume magic land unless otherwise stated. Use g = 10 m/s^{2}  
1  )  Martha pushes downward on a trunk with a force of 600 newtons. The force makes a thirty degree angle with the horizon and the trunk weighs 800 newtons. What is the normal force on the trunk. 1100 N 
2  )  Ralph stands on a bathroom scale as his elevator accelerates upward at 0.75 g's. His mass = 100 kg. What does the scale read. Assume the scale uses units of newtons. 1750 N 
3  )  A mass of 2m is attached to the rope on one side of a pulley. A mass of 5m is attached to the other side. Find the magnitude of acceleration for each mass when the mass are released. 3/7 g 
4  )  Alfred suspects a problem and decides to measure gravity using an Atwood machine. He uses a mass of 4m on one side of the pulley and 2m on the other. This yields an acceleration of 5 m/s/s. What is the value of g? 15 m/s^{2} 
5  )  A buzzard has a mass = 2 kg. He lands on a magical wire with no mass stretched horizontally between poles 150 meters apart. Murphy lands exactly half way between the two poles. The wire sags 2 cm. What is the tension in the wire? 37,000 N 
Draw free body diagrams (FBD) for the following problems. Construct the arrows roughly to scale. In other words, if one force is larger than another it should be drawn larger.  
6  )  Bob pushes Martha on a swing. Draw a FBD when the swing's ropes makes an angle of theta with a vertical line and Bob gives Martha a push. 
7  )  Martha on a swings freely. The swing's ropes makes an angle of theta with a vertical line. Draw a FBD. 
8  )  Martha is on a swing. Bob holds her to prevent her from swinging forward. The swing's ropes makes an angle of theta with a vertical line. Draw a FBD. 
9  )  Juan parks his car on a 10 degree slope. Draw the FBD. 
10  )  A pendulum swings to it's highest position. Draw the FBD. 
11  )  A falling object accelerates downward at 1/2 g. Draw the FBD. 
12  )  A falling object reaches terminal velocity. Draw the FBD. 
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