Some machines have a mechanical advantage of less than 1. How can they still be useful, since the input force is not being multiplied by the machine?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Drag each tile to the correct box. tiles bra i sequence

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.