# According to law of triangle of forces______________?

A. three forces acting at a point will be in equilibrium

B. three forces acting at a point can be represented by a triangle, each side being proportional to force

C. if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibr

D. if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two

E. none of the above

**The unit of power in S.I. units is______________?**

A. newton meter

B. watt

C. joule

D. kilogram meter/sec

E. pascal per sec

**Forces are called coplanar when all of them acting on body lie in________________?**

A. one point

B. one plane

C. different planes

D. perpendicular planes

E. different points

**Effect of a force on a body depends upon________________?**

A. magnitude

B. direction

C. position or line of action

D. all of the above

E. none of the above

**A force is completely defined when we specify________________?**

A. magnitude

B. direction

C. point of application

D. all of the above

E. none of the above