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?
For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account. 2. Inertia - A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. 3. 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.
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.
To analyse this further, we can observe Newton’s first law of motion. Newton’s law describes how an object in motion, remains in motion. This is why the roller coaster continues going up the slope [1]. However, the KE is lost, as gravity takes effect and
* 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 =
N05/4/PHYSI/SPM/ENG/TZ0/XX+ A ball is held at rest at point X and is then released. It drops on to a flat horizontal surface and rebounds to a maximum height at point Y. point X point Y before after Which one of the following graphs best shows the variation with time t of the momentum p of the ball as it moves between point X and point Y? A. p B.
To determine the free-fall acceleration g from a graph of acceleration vs. sine of track angle. • measure the acceleration of a rolling cart on an inclined plane with a motion detector; • change the angle of the incline and measure the acceleration for different angles; • determine how the acceleration depends on the angle and the gravitational acceleration Measuring 'g' experiment. The purpose of this experiment is to measure the acceleration due to gravity and to see if the effects of air resistance can be observed by dropping various balls and recording fall times.. Moment of Inertia The purpose of this experiment is to determine
Don’t confuse mass and weight as mass is actually the amount of ‘stuff’ that makes up an object measured in kilograms. Weight is the force calculated by Weight (N) = Mass (kg) x Gravitational field strength (N/kg) W m The gravitational field strength on Earth is taken as 10N/kg. A resultant force is the sum of forces acting on an object. 2N 4N 4N Resultant force = 2N + 4N = 6N to the right g 2N
In what sense is the Newtonian universe simpler than Ptolemy’s? Suppose observations had shown that the two did equally well at explaining the data. Construct an argument to say that Newton’s universe should still be preferred. The idea that the universe works mechanically, like a clock. It is called Newtonian, because it began from the Newtonian discovery of the laws of gravity and world motion.
Pendulum Lab Hypothesis: To calculate the time it takes the pendulum to swing back and forth one time. Materials: String Small Weight Measuring Tape Clock or stopwatch Diagram: Procedure: 1. Start with a piece of string 120 cm long: 2. Tie the weight onto the string, fasten the string to something which will allow it to swing freely, adjust the string length so that it is 100 cm long. 3.