• Dry labs have no required materials. 4. Attach one end of the string to the cart and the other end to the spring scale. LEVER LAB Part 1 - 1st Class Levers In this part of the lab you will find out how changing the position of the resistance arm affects the mechanical advantage. How can a measurement that is uncertain be useful? What will be the readings on the scales? The second team member will hold the third string-loop and its spring scale, adjusting the position of the string's loop on the washer until the spring scale reading is between 10 N and 20 N. When equilibrium has been reached, the third member will slip a piece of unlined paper under the washer and use dots to mark the center of the washer as well as the positions of each string. It makes use of a "vernier scale" which allows one to make more accurate measurements than a simple pointer and scale apparatus. Each scale will read 10 kg B. A realistic mass and spring laboratory. Hang masses from springs and adjust the spring stiffness and damping. Lab Materials . The scale on earth reads 60 grams. This course includes the option of hands-on or dry lab activities. A vernier scale can usually be read to only about ± 1 division. This mass is also in static equilibrium. For the parent-teacher on a budget, we offer economical triple beam balances and electronic digital scales. Three springs have a spring constant of 5 N/m and the other three have a spring constant of 15 N/m. Lab 7 Buoyancy Experiment Type: Cookbook Overview In this experiment, ... Part III: Finding the Specific Gravity (using a spring scale) Now let’s use our knowledge of the buoyant force to determine the density! Then calculate what the friction force must have been. Use Newton’s Third Law to explain your observations in Post-Lab Questions 1 and 2. Be sure to clamp the ring stand to the lab table, or weight it with several books so that the mass does not pull it off the table. In this lab, we will use spring Are measurements ever exact? Then, calculate the weight needed to lift each load in the pulley systems. With nothing attached to the hook, make sure the scale reads zero. The lower FBD depicts the applied forces for the submerged mass. Spring Scale Lab Adapted from Minds on Physics: Inquiry Activity #41 &Concepts & Challenges:Physical Science Using a Spring Scale, page 253 Goal: In this activity you will learn to use a spring scale to measure the weight (force of gravity) in newtons. Our selection of lab scales include precision balances, analytical balances and moisture analyzers. Zero the spring scale as follows. You will measure frictional forces using a spring scale to measure the force. When our block is at rest, and we pull it with the spring scale, as we increase the tension the block stays at rest, until we reach a point where it begins to move. a) 60 grams b) 10 grams c) 600 grams d) 0 grams. A spring generates a force proportional to how far it is stretched (and acting in the opposite direction to the stretch) F spring = −k × stretch If we adjust the coordinate system so that x = 0 corresponds to the spring being unstretched, then the stretch of the spring is simply equal to x. Having trouble with this tricky physics problem, anyone have an idea of what the answer would be? This accessory kit contains 6 springs that are ideal for physics experiments. 1. Inclined Plane Lab ... Once the inclined plane is set up, a cart is placed upon the inclined plane. A spring scale works on a principle discovered in the 17th century by Robert Hooke. Answer: When the spring balance with stone is immersed in water, the stone experiences an upward force called buoyant force. A spring scale will be used to measure the resistance and the effort involved. Tie a string around one side of your object and attach it to your spring scale b. 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