This problem involves work done by constant forces, including friction. A 40 kg box is pushed 5.0 metres along a rough horizontal floor with a constant applied force of 130 N. The co-efficient of kinetic friction between box and floor is 0.30. What is the total work done on the box.

This problem is about Newton's 2nd Law. A lift cable can withstand a tension of 18,000N before snapping. The empty lift has a mass of 500kg and the maximum acceleration of the lift is 2.25 m/s2. If safety regulation state that the cable should never experience a force greater then two thirds of its breaking tension, how many 65kg people can safely travel in the lift.

This PhysCast will look at converting between different sets of units. A car travels at 100 km/h. What is the speed in m/s?

This is a problem that involves the application of Newton's 2nd law of motion. Two masses, one 4.0 kg and the other 2.5 kg are connected by a light rope that runs over a pulley. The pulley is frictionless and has negligible mass. Calculate the acceleration of the 4.0 kg mass.

This PhysCast will look at converting between different sets of units. A car travels at 100 km/h. What is the speed in m/s?

This problem is about Newton's 2nd Law. A lift cable can withstand a tension of 18,000N before snapping. The empty lift has a mass of 500kg and the maximum acceleration of the lift is 2.25 m/s2. If safety regulation state that the cable should never experience a force greater then two thirds of its breaking tension, how many 65kg people can safely travel in the lift.

This PhysCast will go through some basics of using vectors.

This problem involves work done by constant forces, including friction. A 40 kg box is pushed 5.0 metres along a rough horizontal floor with a constant applied force of 130 N. The co-efficient of kinetic friction between box and floor is 0.30. What is the total work done on the box.

This PhysCast is going to deal with a problem that has a block being pulled up a ramp and how we can apply Newton's 2nd Law to analyse it. A 14.0 kg block is pulled up a frictionless ramp by a 70.0 N force parallel to the ramp. The ramp is inclined at 25 degrees to the horizontal. If the block is initially stationaly, how far does it move in the first 3.0 seconds?

This problem is about simple harmonic motion. A Grandfather clock contains a ball with a diameter of 5 cm suspended from a light, inextensible wire. A modern clock has a think metal rod instead of a ball and wire. Both clock tick when the pendulum reaches its maximum displacement. How long must the wire and rod be if the clocks are to tick ever second exactly?