Physics - Classical Mechanics - DrOfEng

Worked example problem on the vector cross product. You are encouraged to challenge and test your knowledge by first attempting the problem and then comparing your answer. Post your comments/questions below and please subscribe.

The video explains how to compute the vector cross product and its geometric properties are discussed. Post your comments/questions below and please subscribe.

Worked example problem on the conservation of linear momentum. You are encouraged to challenge and test your knowledge by first attempting the problem and then comparing your answer. A bullet with a mass of 2 grams is launched into a block (500 g) at an initial speed v0. Find the initial speed of the bullet if the block swings to a height of h = 0.5 m. Assume that the bullet is lodged into the block i.e. perfectly inelastic collision. Post your comments/questions below and please subscribe.

Worked example problem on the conservation of linear momentum. You are encouraged to challenge and test your knowledge by first attempting the problem and then comparing your answer. A red ball is travelling at an initial velocity 2 m/s. It collides with a green ball which is initially at rest. Calculate the final velocity of both balls at the instant after impact and verify that the energy of the system has been conserved. Assume a perfectly elastic collision and that the balls have the same mass. Post your comments/questions below and please subscribe.

The principle of conservation of momentum is derived and its applications to elastic and inelastic collisions are discussed. Post your comments/questions below and please subscribe.

Worked example problem on linear impulse and momentum. You are encouraged to challenge and test your knowledge by first attempting the problem and then comparing your answer. An explosive is detonated and produces a shockwave. The impulse acting on the particle (1000 kg mass) is plotted below. Calculate the compressed distance of the spring, which is initially at equilibrium and has a stiffness of 40 kN/m, assuming no energy dissipation. Post your comments/questions below and please subscribe.