PPT-Universal Law of Gravitation, Normal Force, Apparent Weight

SPH3U Newtons work The acceleration of gravity must be caused by a net force according to Newtons 2 nd Law Every particle of matter in the universe exerts an attractive force on every other particle. BHS Physical Science . K Warne. Mass & Weight. Mass (kg):. This is a measure of the . amount of matter. (. number of kilograms. ) that makes up a body.. Weight (N):. This is the . force of gravity. Sections 9.1 – 9.3. Reminders. Reading quiz for Chapter 11 (Sections 1-2) due by start of class on . Tuesday.. Lab this week: Lab A7-CE – . Conservation of Energy . – due by Friday at 4 p.m.. In-class Quiz . Recap. You’ve been exposed to basic . F. g. . Standing on Earth, you experience gravitational force.. Jumping, you still experience it. It slows you down until you reach the . peak. of your motion, then it pulls you down faster and faster.. the tensions . T1 and T2 in the strings must satisfy which of the following relations?. (A) Tl = T2 (B) T1 > T2 (C) T1 < T2 (D) Tl + T2 = mg. Answer. As T2 is more vertical, it is supporting more of the weight of the ball. The . Warm-Up. What . is the . Net . force acting on a 10kg object if you used 10 N of force to pick it up?. Remember: . Force = Mass X Acceleration. The acceleration of gravity is 10 m/s. 2. Discuss. : Would your weight be the same on the top of Mount Everest as in Arusha??. Weight, Vector Components, and Friction. The Force of Gravity, Weight, and the Normal Force. The force causing all objects to accelerate toward earth’s is called the force of gravity, g. . Applying Newton’s Second Law, F=ma, we obtain the force of gravity on an object accelerating at 9.80m/s/s is called Weight, Fg=mg and is measured in Newtons, N.. in Circular Motion. © 2015 Pearson Education, Inc.. Centrifugal Force?. If you are a passenger in a car that turns a corner quickly, it is the force of the car door, pushing inward toward the center of the curve, that causes you to turn the corner.. in Circular Motion (cont.). © 2015 Pearson Education, Inc.. Centrifugal Force?. If you are a passenger in a car that turns a corner quickly, it is the force of the car door, pushing inward toward the center of the curve, that causes you to turn the corner.. Newton’s Law of Universal Gravitation. Newton Did not discover gravity, but he did discover gravity was universal. In other words, everything pulls on everything else.. States:. Every object attracts every other object with a force that for any two objects is directly proportional to the mass of each object, and indirectly proportional to the distance between them.. Honors Physics . Zero Gravity Cats!. Universal Gravitation. ALL. objects attract each other with a force of gravitational attraction. Gravity is universal. . This . force of gravitational attraction is directly dependent upon the masses of both objects and inversely proportional to the square of the distance that separates their centers. . PES 1000 – Physics in Everyday Life. Weight and Apparent Weight. Stationary weight: How do we sense weight while we stand motionless?. We sense the . pressure from the normal force . between our feet and the ground that is keeping us from falling through it.. nd. Law algebraically and in words.. Draw an FBD: An object is at rest on an incline. State the Force statements that arise from the FBD.. A object is at rest on a flat surface. A 12.0 N force is applied East, and a force of friction acts with magnitude 8.0 N. Draw an FBD and determine the acceleration of the 4.00 kg mass.. Mini-lab: Weight vs. Mass. Determine the mathematical relationship between an object’s weight and its mass.. Materials:. Electronic Scales. Triple Beam Balance. Multiple objects of different mass. Convert the following to scientific notation. Distance from Sun. : 92,960,000 . miles ____. Estimated Age of universe – 14,000,000,000. Convert the following to standard form. Speed of light = 9.0 * 10.