Simple Pendulum string (l) and bob (m): pull bob aside angle theta, and release the bob at this point. Neglecting air resistence, find the maximum speed when the bob reaches at the bottom [v2 = 2gh] What is the tension at the bottom? Collision with Pendulum: One way of measuring the speed of a bullet is to shoot it into a suspended wooden block. Height to which block swings is determined by mass & speed of bullet, [v2 = 2gh((m+M)/m)2]. If is 10 g. travels at 800m/s and is 80 kg. what is the speed of block plus bullet? [0.1 m.s] How heigh does the block plus the bullet get? [0.5mn] Perfect elastic collision: energy and momrntum both conserved; inelastic collision momentum is conserved but not energy A mass of 0.50 kg attached to a spring of spring constant 35.0 N/m is streached a distance of 7.5 cm from equilibrium and released. The system oscillates on a frictionless table What is the total energy of the system? What will be the speed of the mass when the spring is compressed a distance of 4.0 cm? The coefficient of ststic friction for rubber tires on dry payment is close to 1.0. How fast can a car go round a counter atasn intersection on a flat road if the curvwe has a radius of 8.0 m? If you wanted to build a velodrome for fast cyclists and wanted to have go zipping around ata speed of 100 km/h on a track of radius 100.0 m. What would be the ideal angle of banking? If a cyclist was only riding at a speed of 40 km/h in the velondrome above, what would the force of friction have to be keep the track if the mass of bike plus rider was 90 kg? How big would the coefficient of static friction have to be?