Physics 1D03 - Lecture 35.pptVIP

Physics 1D03 - Lecture 35 * Review Physics 1D03 - Lecture 35 * Topics to study basic kinematics forces free-body diagrams circular motion center of mass energy + conservation + conservative forces statics linear + angular momentum, impulse + conservation rotational energy, rolling objects torque, power, work SHM, x=Acos(ωt+φ), know the graphs (signs of x,v,a) No integrals or integration ! Physics 1D03 - Lecture 35 * MC1) Two cars are traveling down a straight road. The statement that one car passes the other car can be tested by solving for: A) The time t, at which one car has a velocity greater than the  other B) The position x, at which one car has a velocity greater than  the other C) The time t, at which both cars have the some position x D) The position x, at which one car has a greater acceleration  than the other. Physics 1D03 - Lecture 35 * MC2) Four particles, each of mass m, are placed at the corners of a square of side a. They are joined by massless and rigid rods. The square is rotated about an axis through one corner, and perpendicular to the page. The moment of inertia about this axis will be: A) 5ma2 B) 4ma2 C) 3ma2 D) 2ma2 E) 1ma2  Axis of rotation Physics 1D03 - Lecture 35 * Dynamics The incline has an angle θ=30o and coefficient of kinetic friction μk=0.1. If m=1kg and M=5kg, draw a FBD and determine the acceleration of the system, and its speed when it moves 0.5m. M θ m Physics 1D03 - Lecture 35 * Dynamics A block of mass M is pushed up an incline with a horizontal force of P. If the incline has an angle of θ, determine the normal force. M θ P Physics 1D03 - Lecture 35 * Momentum (Linear): Momentum, p=mv, is conserved in all collisions (energy does not have to be conserved). So: pi=pf You can use a diagram and geometry to help you decide on the sign, or simply use equations. Momentum can be broken up into components. m1 m2 v1i Physics 1D03 - Lecture 35 * Momentum – Impulse High-speed stroboscopic p