iGCSE Physics (0625) 1.5.3 Conditions for equilibrium-Exam Style Questions- New Syllabus

IGCSE Physics Paper 1 - All Chapters

Question

A child has four blocks of wood in the shapes of the letters A, M, T and X.
The blocks have equal heights and thicknesses. At their widest parts, their widths are equal.
The child stands the four blocks the right way up on a flat table.
Which block is most likely to fall over when the block is slightly knocked?
A. letter A
B. letter M
C. letter T
D. letter X
▶️ Answer/Explanation
Correct Option: C

Detailed solution:

Stability depends on the position of the centre of gravity ($CG$) and the width of the base.
An object is least stable if its $CG$ is high and its base is narrow.
The letter ‘T’ has a heavy top section and a very narrow base point supporting it.
This results in a high $CG$ relative to its contact area with the table.
When knocked, the line of action of its weight easily falls outside the narrow base.
Thus, letter ‘T’ is the most likely to topple compared to ‘A’, ‘M’, or ‘X’.

Questions

An irregular plane object is suspended freely from point O. The object is displaced and then released. It swings a few times, and comes to rest as shown.

Where is the centre of gravity of the object?
A horizontally to the left of O
B horizontally to the right of O
C vertically above O
D vertically below O

▶️Answer/Explanation

Ans D

Question

What is the point at which the weight of an object appears to act?

A) the centre of gravity of the object
B) the density of the object
C) the moment of a force about a point
D) the pressure on the object due to its depth

▶️Answer/Explanation

Ans: A

MORE IGCSE PHY Paper 1 Questions

Leave a Reply

Scroll to Top