Physics Worksheet - Maria Regina Boy'S Secondary College (Page 9 of 9) in pdf

Physics Worksheet - Maria Regina Boy'S Secondary College Page 9

b) Fill in the missing words.

A moment is the product of a ______________ and its perpendicular

_______________ from the pivot.

[2]

c) Fill in this description of the experiment shown above using some of the words below:

spring, ruler, weights, centre, pivot, equilibrium, distances, stretches, heavy

The _______________ is suspended and balanced freely from its _____________.

This point is acting as a _____________. Unequal _____________ are then placed on

each side of the pivot. The weights are then moved until the metre ruler is in

________________. The anti-clockwise and clockwise moments are calculated. This is

then repeated several times by changing the ______________ on each side.

[6]

d) Figure 3 shows a metal ball being balanced by a coin on a uniform wooden bar which is

pivoted at its centre.

metal ball

25 cm

10 cm

coin

0.2 N

pivot

Figure 3

(i) Calculate the clockwise moment of the coin in Ncm.

_________________________________________________________________ [1]

(ii) What is the value of the anti-clockwise moment?

_________________________________________________________________ [1]

(iii) What would be observed if the metal ball is moved away from the pivot?

_________________________________________________________________ [1]

END OF PAPER

Page 9 of 9

Physics Half yearly exam 2014 – Track 2 - Form 3

Physics Worksheet - Maria Regina Boy'S Secondary College Page 9