CHAPTER 12. FORCE,MOMENTUM AND IMPULSE 12.6
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(a) (b) (c) (d)
- [SC 2002/03 HG1]Two blocks each of mass 8 kg are in contact with each other
and are accelerated along a frictionless surfaceby a force of 80 N as shown in the
diagram. The force which block Q will exert onblock P is equal to ...
8 kg
Q
8 kg
P
80 N
(a) 0 N
(b) 40 N
(c) 60 N
(d) 80 N
- [SC 2002/03 HG1]Three 1 kg mass piecesare placed on top of a 2kg trolley. When
a force of magnitude F is applied to the trolley, it experiences an acceleration a.
2 kg
1 kg 1 kg
1 kg
F
If one of the 1 kg masspieces falls off while F is still being applied, the trolley will
accelerate at ...
(a)^15 a
(b)^45 a
(c)^54 a
(d) 5 a
- [IEB 2004/11 HG1]A car moves along a horizontal road at constant velocity. Which
of the following statements is true?
(a) The car is not in equilibrium.
(b) There are no forcesacting on the car.
(c) There is zero resultant force.
(d) There is no frictional force.
- [IEB 2004/11 HG1]A crane lifts a load vertically upwards at constant speed. The
upward force exerted onthe load is F. Which of the following statements is correct?
(a) The acceleration of the load is 9,8 m.s−^2 downwards.
(b) The resultant force on the load is F.
(c) The load has a weight equal in magnitude toF.
(d) The forces of the crane on the load, and theweight of the load, are an example
of a Newton’s third law’action-reaction’ pair.
- [IEB 2004/11 HG1]A body of mass M is at rest on a smooth horizontal surface with
two forces applied to itas in the diagram below. Force F 1 is equal to Mg. The force
F 1 is applied to the right atan angle θ to the horizontal, and aforce of F 2 is applied
horizontally to the left.
