Answer in detail.
1. Give some examples of push and pull that we see in our daily life.
2. Discuss the various effects of force.
3. Explain gravitational force.
4. Why do two bodies in contact exert frictional force? What will be the direction of friction
5. Discuss various properties of friction.
6. What are the factors affecting friction?
7. Discuss the types of friction.
Answers
Answer:
push means observe push the things
Answer:
1) pushing a cart to move it further and pulling a door
2) Change in direction, change in motion, change in the speed or change in the shape
3)The force which attracts certain object towards the earth is known as gravitational force
4)Frictional force always acts parallel to two planes in contact with each other and in a direction opposite to that of relative motion of the two bodies. 2. Frictional forces are caused due to intermolecular interactions between the bodies.
6)Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth.
5)Friction enables us to walk freely.
It helps to support ladder against wall.
It becomes possible to transfer one form of energy to another.
Objects can be piled up without slipping.
Breaks of vehicles work due to friction.
It always resists the motion, so extra energy is required to overcom
7)static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Fluid friction occurs in liquids and gases