Write different type of common forces.
Write different type of common forces.
Gravitational force, electric force and electromagnetic force are field force. Push or pull are other force in mechanics are contact forces.
A book resting on a table, system of rigid bodies connected by hings (or support) are mutual constant forces.
Component of constant force normal to surface is called reaction $(\mathrm{R}=\mathrm{N})$ Component of contact force parallel to surface is called frictional force.
Some examples of contact forces in mechanics
When spring is subjected to external force restoring force is developed in the spring which tries to regain original shape. This restoring force is proportional to change in length which is given by equation $\mathrm{F}=-\mathrm{K} x$. Negative sign indicate that restoring force is in opposite direction to displacement.
Similar Questions
Explain primary concept of force.
Explain primary concept of force.
Which of the following groups of forces could be in equibrium
Which of the following groups of forces could be in equibrium
When a body is stationary
When a body is stationary
- [AIIMS 2005]
A mass of $2\, kg$ suspended with thread $AB$ (figure). Thread $CD$ of the same type is attached to the other end of $2\, kg$ mass. if the lower thread is pulled with a jerk, what happens ?
A mass of $2\, kg$ suspended with thread $AB$ (figure). Thread $CD$ of the same type is attached to the other end of $2\, kg$ mass. if the lower thread is pulled with a jerk, what happens ?
For given systen $T_2$ .......
For given systen $T_2$ .......