1. Use 100N horizontal force to press the cube with side length of 10cm and weight of 60N on the vertical wall. What is the pressure and pressure on the wall? 2. What is the gravity of 225ml water?

1. Use 100N horizontal force to press the cube with side length of 10cm and weight of 60N on the vertical wall. What is the pressure and pressure on the wall? 2. What is the gravity of 225ml water?

A horizontal force of 100N is used to press a cube with a side length of 10cm and a weight of 60N on a vertical wall. At this time, the pressure on the wall is f = 100N,
The pressure on the wall is p = f / S = 100 / 0.01pa = 10000pa
The volume of water is v = 225ml, the gravity is g = PGV = 10 ^ 3 * 10 * 255 * 10 ^ - 6N = 2.25n