Question
A hole is drilled in a square tile. The diagram shows the tile hanging freely on a nail.
Where is the centre of mass of the tile?
Answer/Explanation
Ans: D
Question
A student sets up the apparatus shown in the diagram to find the centre of mass of the card.
The student makes sure that the card, the string and the bob are all at rest.
What should the student do next?
Mark a horizontal line on the card level with the middle of the string.
Mark the line of the string on the card.
Pull the bob on the string to one side and release it.
Replace the bob with a heavier bob.
Answer/Explanation
Ans: B