Question

What are two external forces ?What do they cause?

Answer 1

Answer:

What are the two external forces?

For our purposes, we will simply say that external forces include the applied force, normal force, tension force, friction force, and air resistance force. And for our purposes, the internal forces include the gravity forces, magnetic force, electrical force, and spring force.

Answer 2

Answer:

we will simply say that external forces include the applied force, normal force, tension force, friction force, and air resistance force. And for our purposes, the internal forces include the gravity forces, magnetic force, electrical force, and spring force.

Friction can be defined as the force that resists the relative motion of solid surfaces, fluids, or elements that collide or slide against each other. Its effect would cause the object in motion to slow down. If the friction is increased, more energy is needed by the object to keep its momentum hence it will slow down.

effect of tension force

1. A force can move a stationary object.
2. A force can stop a moving object.
3. A force can change the speed of a moving object.
4. A force can change the direction of a moving object.
5. A force can change the shape and size of an object.