Physics –Forces – The Glider Project Force Meters Mystery (inertia) Stations Carts & Masses (Weight & (Newton’s 1st) (Newton’s 2nd) Hooke’s Law) Students visit various inertia Students attach various masses Students create their own demonstrations around to a string connected to a cart. force meters using an elastic room, and must determine The mass falls, students Student material (from the T4T cart) what they all have in determine the acceleration of the Experience and calibrate them by hanging common (concept of inertia cart, and discover the known masses. is not discussed until end of relationship between force, lesson). mass, and acceleration. Bowling ball, table tennis Elastic material from cart, vinyl T4T Material ball, pennies, tablecloth, T4T cart, string, set of weights window blind, set of weights dishes 1st Law. An object in motion will Weight: Fg = mg continue in motion with Newton’s 2nd Law. Big Idea constant velocity unless Fnet = ma. Hooke’s Law: Fs = -kx acted upon by a net external (honors physics only) force. The force meters are Connection A net external force on an object The glider’s inertia causes its essentially scaled-down to will cause it to accelerate, which resistance to acceleration versions of the glider launcher Culminating explains the glider’s acceleration when launched. that will be used in the during launch. Activity culminating project. CA Standards PH1. b. PH1. c. -- Next Gen. Sci. -- HS-PS2-1. -- Standards Time One 55-min period Two 55-min periods One 55-min period CA Standards: PH1. b. Students know that when forces are balanced, no acceleration occurs; thus an object continues to move at a constant speed or stays at rest first law). (Newton’s PH1. c. Students know how to apply the law F = ma to solve one-dimensional motion problems that involve constant forces second law). (Newton’s PH1. d. Students know that when one object exerts a force on a second object, the second object always exerts a force of equal magnitude and in the opposite direction third law). (Newton’s
Physics –Forces – The Glider Project Mystery (inertia) Stations (Newton’s 1st) Carts & Masses (Newton’s 2nd) Force Meters (Weight & Hooke’s Law) Student Experience Students visit various inertia demonstrations around room, and must determine what they all have in common (concept of inertia is not discussed until end of lesson). Students attach various masses to a string connected to a cart. The mass falls, students determine the acceleration of the cart, and discover the relationship between force, mass, and acceleration. Students create their own force meters using an elastic material (from the T4T cart) and calibrate them by hanging known masses. T4T Material Bowling ball, table tennis ball, pennies, tablecloth, dishes T4T cart, string, set of weights Elastic material from cart, vinyl window blind, set of weights Big Idea 1st Law. An object in motion will continue in motion with constant velocity unless acted upon by a net external force. Newton’s 2nd Law. Fnet = ma. Weight: Fg = mg Hooke’s Law: Fs = -kx (honors physics only) Connection to Culminating Activity The glider’s inertia causes its resistance to acceleration when launched. A net external force on an object will cause it to accelerate, which explains the glider’s acceleration during launch. The force meters are essentially scaled-down versions of the glider launcher that will be used in the culminating project. CA Standards PH1. b. PH1. c. -- Next Gen. Sci. Standards -- HS-PS2-1. -- Time One 55-min period Two 55-min periods One 55-min period CA Standards: PH1. b. Students know that when forces are balanced, no acceleration occurs; thus an object continues to move at a constant speed or stays at rest (Newton’s first law). PH1. c. Students know how to apply the law F = ma to solve one-dimensional motion problems that involve constant forces (Newton’s second law). PH1. d. Students know that when one object exerts a force on a second object, the second object always exerts a force of equal magnitude and in the opposite direction (Newton’s third law).
FORCES-The_Glider.docx