1. coplanar non-concurrent forces
2. non-coplanar concurrent forces
3. non-coplanar non-concurrent forces
4. intersecting forces
non-coplanar concurrent forces
1. coplanar force
2. non-coplanar forces
3. lever
4. couple
couple
1. time
2. mass
3. volume
4. acceleration
acceleration
1. maximum when it acts at the center of gravity of a body
2. different at different points in its line of action
3. the same at every point in its line of action
4. minimum when it acts at the C.G. of the body
the same at every point in its line of action
1. energy
2. mass
3. momentum
4. angle
momentum
1. 2 and V6
2. 3 and 1 kg
3. V5andV5
4. 2 and 5
V5andV5
1. their total sum is zero
2. two resolved parts in two directions at right angles are equal
3. sum of resolved parts in any two perpendicular directions are both zero
4. all of them are inclined equally
sum of resolved parts in any two perpendicular directions are both zero
1. balance each other
2. constitute a moment
3. constitute a couple
4. constitute a moment of couple
constitute a couple
1. if a system of coplanar forces is in equilibrium, then their algebraic sum is zero
2. if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero
3. the algebraic sum of the moments of any two forces about any point is equal to moment of the resultant about the same point
4. positive and negative couples can be balanced
if a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero
1. weight
2. velocity
3. acceleration
4. force
weight