This PhysCast is about the first law of thermodynamics. A closed by uninsulated container at room temperature containing 1 kg of water is shaken violently until the temperature rises by 5 degrees C. The mechanical work required in the process is 22 kj. a) How much heat is transferred during the shaking? b) How much mechanical energy would have been required had the container been perfectly insulating?

This PhysCast explores the mathematics of simple harmonic motion.

This PhysCast deals with simple harmonic motion where dampening is present. The amplitude of a lightly damped oscillator decreases by 3.0% during each cycle. a) What percentage of the mechanical energy is lost in each cycle? b) What is the dampening coefficient for the 100 g mass if the cycle time is 1 sec?

In this PhysCast we are asked to consider the motion of a uniform cylinder of mass m and radius R as it rolls smoothly down a ramp at angle theta to the horizontal. We are asked to find an expression for the linear accceleration of the centre of mass of the cylinder.

This question is about energy and rotational motion. A bowler bowls a 160g cricket ball with a diameter of 7cm with a linear velocity of 144km/h. The ball is measured to rotate at 22250 r.p.m. What proportion of the ball's kinetic energy is rotational?

This question deals with both hydrostatics and hydrodynamics. A 4.0cm diameter horizontal pipe connects passes through a freshwater dam at a depth of 6.0 meters and is sealed by a plug. A) Find the magnitude of the frictional force between a plug and the pipe wall? B) With the plug removed what volume of water exits the pipe in 3.0h?

This PhysCast deals with a problem involving 1 dimensional motion. A ball is thrown straight upwards and reaches a maximum height of 5.2 m. (a) What was the ball's initial speed? (b) How long did it take for the ball to reach the top of it's flight?

In this problem we will be looking at the difference between doing a vector calculation and a scalar calculation. A ball moving horizontally at 20 m/s bounces off a wall, and then moves at 10 m/s in the opposite direction. What is the ball's change in velocity and change in speed?

This is a PhysCast on 2 dimensional motion. A raging flood has washed away a section of highway, creating a gash 1.7 meters deep. A car moving at 31 m/s goes straight over the edge. How far from the edge of the washout does it land?

The following PhysCast deals with a non-uniform bar which is suspended and in static equilibrium. A nonuniform bar is suspended at rest in a horizontal position by two massless cords. One cord makes the angle theta = 36.9 degrees with the vertical; the other makes the angle phi = 53.1 degrees with the vertical. If the length of the bar is 6.10 m, compute the distance x from the left end of the bar to its centre of mass.