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Physics
UTME / JAMB 2008
Simple Machine
Diagram
Solution
The efficiency of the pulley system shown above is 80%. find the effort E required to lift the load of 1200N
A
275N
B
325N
C
375N
D
573N
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2004
Simple Machine
Solution
A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P?
A
1500N
B
500N
C
4166N
D
750N
medium Difficulty
Study Explanation
Physics
UTME / JAMB 1999
Simple Machine
Diagram
Solution
The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W
A
13.3N
B
20.0N
C
40.0N
D
80.0N
medium Difficulty
Study Explanation
Physics
UTME / JAMB 1986
Simple Machine
Diagram
Solution
fig 4 represents a block-and-tackle pulley system on which an effort of W newtons supports a load of 120.0N if the efficiency of the system is 40% then the value of W is
A
28.0N
B
48.0N
C
50.0N
D
288.0N
medium Difficulty
Study Explanation