Question

How can you differentiate between a contact force and a force at a distance? (AS)
2. Find the net forces from the following diagrams.
9N
8N
8N
8N
CIÓN
d)
a) ON
12N b)SN
8N
3. A man stand still on a level floor. What forces act on him? Draw a free body diagram
(FBD) to show all forces acting on him? (AS)
4. The surface area of an object is 20 m’and a force of 10 N is applied on it, then what
is the pressure? (AS)
5. How do you appreciate the role of friction in facilitating our various activities? (AS)
Higher Order Thinking Questions
1. If you push a heavy box which is rest, you must exert some force to start its motion.
However once the box is sliding you apply a lesser force to maintain that motion.
Why? (AS)
2. How do you increase the pressure by keeping (AS)
a) area unchanged b) force unchanged
Imagine that friction disappeared from the earth. What will happen? Explain. (AS​

Answer 1

Answer:

Contact forces involve push, pull and friction. ... At a distance At a distance force is when two interacting force is when two interacting objects are not touching, for example: the moon and the Earth's seas. At a distance forces encompasses gravity and magnetism. encompasses gravity and magnetism.