In the graphical method for the addition of forces, forces are added by

The perpendicular distance between the axis of rotation and the line of action of the force is called the

A. moment arm

B. inertia

C. velocity

D. displacement

A nut has been tightened by a force of 180 N using an 8 cm long spanner. What length of a spanner is required to loosen the same nut with 150 N force

A. 11 cm

B. 8.5 cm

C. 9.6 cm

D. 10.9 cm

A force of 120 N is applied perpendicularly on a spanner at a distance of 9 cm from a nut. The torque produced by the force will be

A. 12 Nm

B. 10.8 Nm

C. 15 Nm

D. 12.59 Nm

The forces that are parallel to each other and have the same direction are called

A. positive forces

B. negative forces

C. unlike parallel forces

D. like parallel forces

An object tied with string and is hung vertically is an example of

A. parallel forces

B. unlike parallel forces

C. like parallel forces

D. tension in string