Pun on ‘mew’- explained. 

Okay, this joke deserves an explanation for so many different reasons.

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. The coefficient of friction (symbolized by the Greek letter mu (μ)) describes the degree of interaction between two surfaces.

Higher and Lower ‘mews’.

A higher mu (mew) indicates that two surfaces in contact have a greater resistance to relative motion. i.e to pull one surface off the other would be hard.

A lower mu (mew) indicates that the two surfaces in contact have less resistance to relative motion. i.e to pull one surface off the other would be easier.

Ergo the cat with the lesser “Mew” will fall off first due to the lesser resistance offered between the cat and the roof.

Meow!

Newton’s Cradle.

Newton’s cradle, named after Sir Isaac Newton, is a device that demonstrates conservation of momentum and energy via a series of swinging spheres. When one on the end is lifted and released, it strikes the stationary spheres; a force is transmitted through the stationary spheres and pushes the last one upward.