If the block doesn't move with respect to the Earth, there are no accelerations anywhere. It's all static forces.Harsh Bhardwaj said:
If your feet are providing the force the other way to help you generate the pushing force with your hands, then there are equal and opposite forces on the surface of the Earth, no?Harsh Bhardwaj said:
The reaction force of friction is the force that is exerted by a surface on an object in contact with it, in the opposite direction of the object's motion. It is a result of the interaction between the molecules of the two surfaces in contact.
The reaction force of friction can have both positive and negative effects on the ground. On one hand, it allows us to walk and move objects on the ground without slipping. On the other hand, it can cause wear and tear on the ground's surface, leading to erosion and damage over time.
The reaction force of friction on the ground is affected by several factors, including the type of surface material, the weight and surface area of the object in contact, and the angle and speed of the object's motion.
The reaction force of friction on the ground can be reduced by using lubricants such as oil or grease, which form a layer between the two surfaces and reduce the friction. Additionally, using materials with lower coefficients of friction, such as rubber or plastic, can also help to reduce the force.
Yes, the reaction force of friction on the ground can be increased by increasing the weight and surface area of the object in contact, as well as by increasing the roughness of the surface. This is why it is important to wear appropriate footwear for different types of terrain to increase the friction and prevent slipping.