Explore how forces and friction work to hold a block against a vertical wall. This video explains normal force, frictional force, and equilibrium conditions, showing how these forces balance to ...

Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Design by Evelyn Mousigian As a physics major, it feels like I spend the majority of my waking ...

Explore the critical angle condition that determines the motion of a spool under applied force. This physics problem breaks down the concepts step by step, explaining when the spool rolls forward, ...

The following is an extract from our Lost in Space-Time newsletter. Each month, we hand over the keyboard to a physicist or two to tell you about fascinating ideas from their corner of the universe.

If you ask a physicist what the biggest unsolved problem facing the field today is, you're likely to get a variety of answers. Some will point to the hierarchy problem, wondering why the masses of the ...

(via Sabine Hossenfelder) Progress in the foundations of physics is moving slowly. And yet it moves. Today I look at the five biggest problems in physics, what their status is, and how long it will ...