Formative Practice 1.3 – Physics Form 5 Chapter 1 (Force and Motion II)


Question 1:
State the meaning of forces in equilibrium.

Answer:
An object is said to be in equilibrium of forces when the forces acting on it produces a zero resultant force.

Keywords:
– forces acting
– zero resultant force


Question 2:


Figure 1.31 shows a block that is stationary on an inclined plane when a stopping force, P is applied horizontally.
(a) Sketch and label the weight of the block, W and the normal reaction from the surface of the plane, R.
(b) Sketch the triangle of forces for P, W and R.

Answer:
(a)

(b)