Ch 09: Momentum & ImpulseWorksheetSee all chapters
All Chapters
Ch 01: Units & Vectors
Ch 02: 1D Motion (Kinematics)
Ch 03: 2D Motion (Projectile Motion)
Ch 04: Intro to Forces (Dynamics)
Ch 05: Friction, Inclines, Systems
Ch 06: Centripetal Forces & Gravitation
Ch 07: Work & Energy
Ch 08: Conservation of Energy
Ch 09: Momentum & Impulse
Ch 10: Rotational Kinematics
Ch 11: Rotational Inertia & Energy
Ch 12: Torque & Rotational Dynamics
Ch 13: Rotational Equilibrium
Ch 14: Angular Momentum
Ch 15: Periodic Motion (NEW)
Ch 15: Periodic Motion (Oscillations)
Ch 16: Waves & Sound
Ch 17: Fluid Mechanics
Ch 18: Heat and Temperature
Ch 19: Kinetic Theory of Ideal Gasses
Ch 20: The First Law of Thermodynamics
Ch 21: The Second Law of Thermodynamics
Ch 22: Electric Force & Field; Gauss' Law
Ch 23: Electric Potential
Ch 24: Capacitors & Dielectrics
Ch 25: Resistors & DC Circuits
Ch 26: Magnetic Fields and Forces
Ch 27: Sources of Magnetic Field
Ch 28: Induction and Inductance
Ch 29: Alternating Current
Ch 30: Electromagnetic Waves
Ch 31: Geometric Optics
Ch 32: Wave Optics
Ch 34: Special Relativity
Ch 35: Particle-Wave Duality
Ch 36: Atomic Structure
Ch 37: Nuclear Physics
Ch 38: Quantum Mechanics

Concept #1: Intro to Center of Mass

Additional Problems
Two metal spheres are connected by a light, 15 cm rod. One sphere has a density of 1500 kg/m3 and a radius of 10 cm, the other has a density of 2200 kg/m3 and a radius of 5 cm. What is the center of mass of this system?
A meter stick can be balanced by placing a support at the 50.0-cm mark. If a mass of 50.0 g is attached to the stick at the 90.0-cm mark, the stick can be balanced by placing a support at the 61.3-cm mark. What is the mass of the meter stick? NOTE: 'g' here is grams. A) 32.6 g B) 178 g C) 73.4 g D) 89.7 g E) 127 g
Where is the center of mass of the Earth – Sun system located? A) Just outside the surface of the Sun. B) Halfway between the Earth and Sun. C) Inside the Sun, 25 km from the center. D) Inside the Sun, 7500 km from the center. E) Inside the Sun, 450 km from the center.
Three balls with masses of 5 g, 1 g, and 6 g, respectively, are connected by massless rods. The balls are located as shown in the figure. What are the coordinates of the center of mass (in units of m)?
A croquet mallet balances when suspended from its center of mass, as shown in the figure(above). If you cut the mallet in two at its center of mass, as shown, how do the masses of the two pieces compare? [A] The masses are equal. [B] The piece with the head of the mallet has the greater mass. [C] The piece with the head of the mallet has the smaller mass. [D] It is impossible to tell.
A projectile fired into the air suddenly explodes into several fragments. What can be said about the motion of the center of mass of the system made up of all the fragments after the explosion? 1. Center of mass of the system moves in the direction opposite to the direction of a fragment with the biggest mass, 2. Center of mass of the system moves in the direction of a fragment with the biggest mass, 3. Center of mass of the system moves in the direction of the biggest fragment, 4. Center of mass does not move, 5. Center of mass of the system follows the same parabolic path the projectile would have followed if there had been no explosion, 6. There is not enough information given. 7. Center of mass of the system moves in the direction opposite to the direction of a projectile just before it exploded,