Physics

We consider the uniform motion of a point along a circle of radius A. Light produces a shadow on a screen. The motion of the…

Example: A Yo-Yo is a uniform disk with mass m = 0.24 kg, outer radius R = 0.12 m, and inner radius r = 0.08…

Example 1: A block with mass M = 5.1 kg sits on a massless plank of length L = 2.3 m. The plank is supported…

We consider a meter stick that is free to rotate about a fixed axis (at the end). Intuition tells us that the applied force F…

We consider a wheel with radius r that rolls without slipping. This means that the distance d is equal to arc-length s = rθ, d…

Angular displacement is defined, Δθ = (arc length / radius) = s/r For a full circle θ = 2π rad. Note that rad is not…

The momentum is conserved, but the mechanical energy is not conserved in the example with a person throwing the dumbbell while standing on a skateboard.…

Example: Two people with masses m1 = 45.1 kg and m2 = 65.2 kg are standing on the left and right side of a 4.2 m…

Example : A person [mass mp = 43 kg] is standing on a skateboard [mass mb = 2 kg ] at rest, while holding a…

When a ball bounces off a wall, it is reflected with the same speed but travels in the opposite direction: v → -v The kinetic…