12.6 CHAPTER 12. FORCE,MOMENTUM AND IMPULSE
The box will:
(a) be lifted off the surface.
(b) move to the left.
(c) move to the right.
(d) remain at rest.
- [SC 2001/11 HG1]A 2 kg mass is suspended from spring balanceX, while a 3 kg
mass is suspended fromspring balance Y. Balance X is in turn suspended from the
3 kg mass. Ignore the weights of the two springbalances.
Y
3 kg
X
2 kg
The readings (in N) on balances X and Y are as follows:
X Y
(A) 20 30
(B) 20 50
(C) 25 25
(D) 50 50
- [SC 2002/03 HG1] P and Q are two forces of equalmagnitude applied simultane-
ously to a body at X.
P
Q
θ
X
As the angle θ between the forces is decreased from 180◦to 0◦, the magnitude of
the resultant of the twoforces will
(a) initially increase andthen decrease.
(b) initially decrease and then increase.
(c) increase only.
(d) decrease only.
- [SC 2002/03 HG1]The graph below shows the velocity-time graph for a moving
object:
v
t
Which of the followinggraphs could best represent the relationship between the
resultant force applied to the object and time?
