¿Cuál es la presión sobre un bloque de madera si el área de la superficie es de 2 cm por 5 cm y tiene una masa de 100 g?

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

Why does a collision with an airbag cause less damage than a collision with a steering wheel