K.C.S.E Physics Q & A - MODEL 2003PP1QN14
​Figure 9 shows a uniform bar in equilibrium under the action of two forces.
Determine the value of F
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K.C.S.E Physics Q & A - MODEL 2002PP1QN12
​Fig. 7 shows a non – uniform log of mass 100kg balanced on the pivot by a 2kg mass placed as shown.
Determine the distance of the center of gravity of the log from the pivot.
answer
K.C.S.E Physics Q & A - MODEL 2002PP1QN03
If the portion of the rock represented by the shaded part is chopped off explain why the rock may topple to the right.
answer
K.C.S.E Physics Q & A - MODEL 2002PP1QN02
Fig. 2 represents a rock balanced at point O.G is the center of gravity of the rock. Use this information to answer questions 2 and 3.​
​Draw and label on the figure, the forces acting on the rock.
K.C.S.E Physics Q & A - MODEL 2001PP1QN12
​Fig. 9 shows a uniform light bar one meter in length in equilibrium under the action of forces F1 F2 F3 and F4. All the forces are in the same plane. Use the information on the figure to answer questions 12 and 13.
​Name one set of forces on the figure that constitutes a couple.
Determine the moment of the couple named in question 12. K.C.S.E Physics Q & A - MODEL 2001PP1QN03
Fig 3 shows two identical hollow spheres. Spheres A is completely filled with the liquid while B is partly filled with identical liquid.
​When the two spheres are rolled gently on a horizontal surface. It is observed that the sphere B stops earlier that the sphere A. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2001PP1QN02
​ Fig 2 shows a uniform bar in equilibrium.
When water is added into the beakers A and B until the weights are submerged, it is observed that the bar tips towards B. Explain this observation.
answer
K.C.S.E Physics Q & A - MODEL 2000PP1QN11
​The structure in fig. 6 is in equilibrium. Identify the struts and the ties in the structure.
ANSWER
K.C.S.E Physics Q & A - MODEL 2000PP1QN03
Fig. 2 shows a beaker placed on a bench. of ice is placed in the beaker as shown.
State and explain the change in the stability of the beaker when the ice melts.
ANSWER
K.C.S.E Physics Q & A - MODEL 1999PP1QN03
State how the position of the centre of gravity of a body in stable equilibrium changes to that in the rest position when the body is slightly tilted and then released.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1999PP1QN02
Figure 2 shows forces f1 and F1 and F2 acting on a meter rule such that it is in equilibrium.
Mark on the figure a third force F3 acting on the rule such that it is in equilibrium maintained.
K.C.S.E Physics Q & A - MODEL 1997PP2QN02
(a) Figure 2 shows a uniform plank 20 m long, weighing 400N resting on two supports A and B 9cm apart. A person weighing 600N walks towards B starting at
The data in the table below represents the upward force FA exerted at A as a function of distance, d. The distance d is measured from A
(i) On the grid provided plot a graph of FA ( y – axis) against the distance d
(ii) From the graph determine how far beyond point B, the person can walk before the plank tips (b) In the set up in the figure 3, the metre rule is in equilibrium
Given that the metre rule is uniform, determine its weigh
K.C.S.E Physics Q & A - MODEL 1996PP1QN14&15
Figure 5 shows a wheel W pivoted at its centre, O and held stationary by a string and a spring. The tension in the strings is T and the force on the springs is F.
Use this information to answer 14 and 15
​(a)State how the magnitudes of T and F compare. Give reasons for your answer
(b)State what would happen to the wheel if the string snapped
answers
(a)T< F or F> TMoments of T and F about are equal; but the perpendicular distance from O to T perpendicular distance from O to F/ Resultant moment are zero
(b)Turn anticlockwise about O, OR Oscillate about O K.C.S.E Physics Q & A - MODEL 1996PP1QN13
Figure 4 shows tow parallel current conductors A and B placed close to each other. The direction of the current is into the plane of the paper.
On the same figure; (i) Sketch the magnetic field pattern (ii) Indicate the force F due to the current on each conductor
K.C.S.E Physics Q & A - MODEL 1995PP1QN3
What is meant by the centre of gravity of a body?
ANSWERS
1995 Q33 P1
What is meant by the centre of gravity of a body? (1 mark) 1998 Q7 P1 State one advantage of fitting wide tyres on a vehicle that moves on earth roads. 1999 Q3 P1 State how the position of the centre of gravity of a body in stable equilibrium changes to that in the rest position when the body is slightly tilted and then released. |
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