Forces Test Review 1. Inertia can be best described as the (A) force that keeps an object in motion with constant velocity (B) force that keeps an object at rest (C) force that overcomes friction (D) property responsible for an object's resistance to changes in motion (E) property responsible for slowing down an object 2. A box is given a sudden push up a ramp. Friction between the box and the ramp is not negligible. Which of the following diagrams best represents the directions of the actual forces acting on the box as it moves upward after the push?
Potential Energy - Is the energy stored in an object due to its position in a force field or in a system due to its configuration. 4. Kinetic Energy - An object is the energy that it possesses due to its motion. 5. Friction - Is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
The distance between the forces is given by the Coulombs law through the use of the formula F=kq1q2/r2.0.1newtons = 8.99*109*3.2*10-6*7.7*10-7/r2 R= 555.78 Answer to question 3 • Potential difference between the two plates is equal to velocity which is equal to 6.0*106m/s • Force = mass *acceleration = 1.4*10-13*6.0*106 = -8254 nektons The speed of the particles are computed by the formula V=ED. This is equal to 8.5*10-6*0.15. This is equal to 84.1 Answer to question 4 Voltage = current *resistance. This implies that in this case while V is 5.0 and resistance is 1.0*103, current will be equal to 5/1.0*103, = 500 amps B the direction of the conventional current provides the electric charge movement from the positive side of the battery to its negative side as in indicated in the diagram below Answer to question 5 • This section focuses on the equivalent resistance of a circuit. The equivalent resistance will be equal to (5.0*102+1.00*103)2.
In this sort of example you should choose one direction to be positive and the other direction to be negative. The example below illustrates this point. I will choose the right to be positive and the left to be negative. Before being fired After being fired -pcannon +pball p=0 pball - pcannon = 0 Sample Question 8 Sample Question 9 Static electricity In static electricity when two objects are rubbed together the electrons move from one object to another. This causes one object to have an overall positive charge and the other object to have an overall negative charge.
If the friction between the block and bench is negligible, calculate i. The acceleration of the system ii. The tension in the cord. b. If the coefficients of friction for the block on bench are μs=0.04 and μk=0.02 i.
Procedure: Part I: Rectangular Solid (Wooden Block) Mass: In order to find the mass of the rectangular solid utilize the balance.Document the mass by rounding to the closest 0.1 g in the data table underneath. Volume: Find out the length, width, and height of the rectangular solid by utilizing the metric ruler. Document these by rounding to the closest 0.01 cm. Utilize the formula for
Newton’s second law of motion is expressed as a mathematical equation: Fnet = ma (Force = mass*acceleration) A significant notion of this equation is that an object accelerates in the direction of the new force, and acceleration is created by the net force. The SI unit for force in the above equation is Newton (N), SI unit for accelerations is metre per second squared (m/s2) and the SI unit for mass is kilograms (kg). The objective of this experiment was to show the relationship between acceleration and force in a frictionless environment and to show the concept of mass (Lab#1). Other equations used in this experiment were: V22 = V12 + 2ad; used to find the acceleration for each weight V1 = Lt1 and V2 = Lt1; both used to find the acceleration Materials * Two vernier photogate timers * String * Glider * Blower * Air—cushioned track * Weights and Hanger * Pulley and clamps * Vernier Lab Pro Procedure and Observations 1. Two photogate timers, 60 cm apart, were set over the air track.
* Smart pulley, used at the end of the track as a pulley system between the bigger and smaller masses. Principles The principles used in the experiment would be Newton’s Second Law, which says that the behavior of objects under a net force is Fnet=ma, and net force is the sum of all forces acting on an object, Fnet=F. The experiment also uses principles of Tension “T” and the force of gravity “Fg”, which is equal to 9.8 m/s². Procedure Part A * Take the mass of the cart: 253.0 g * Add a 10g weight to the 1.0 g paper clip, making smaller mass 11.0g * Record the slope of the line of run #1 after releasing the cart to the end of the track. (y = 0.355x + 0.119) * Repeat with another 10g weight, making smaller mass 21.0g * Record the slope of the line after run #2 (y = 0.672x + 0.155) * Repeat with another 10g weight, making smaller mass 31.0g * Record the slope of the line after run #3 (y = 0.966x + 0.268) * Repeat with another 10g weight, making smaller mass 41.0g * Record the slope of the line after run #4 (y = 1.27x + 0.135) * Repeat with another 10g weight, making smaller mass 51.0g * Record the slope of the line after run #5 (y = 1.46x + 0.294) * Calculate the acceleration for each run using a =
Experiment 1: Pressure, Temperature, and Velocity Measurement Objective: The objective of this experiment is to determine the pressure and density of laboratory air, calibrate a pressure transducer and scannivalve, then determine the test section speed as a function of fan speed using three methods of velocity measurement. Equipment: Absolute pressure transducer, digital thermometer, pressure transducer (voltmeter), micromanometer, scannivalve, Pitot tube, low-speed wind tunnel. Part 1: Measurement of Atmospheric Pressure and Density 1. Read the barometer and wind-tunnel thermocouple. 2.
F L D. F L P P 8805-6504 –7– 9. N05/4/PHYSI/SPM/ENG/TZ0/XX+ If the resultant external force acting on a particle is zero, the particle A. B. C. D. must have constant speed. must be at rest. must have constant velocity.