PHYSICS

JAMB 2012 - Question 14

Physics 2012 JAMB Past Questions - Question 14: A block and tackle is used to raise a load of 250N through a vertical distance of 30m .What is the efficiency of the system if the work done aganist friction is 1500J?

Choose the correct answers from the options given.
A block and tackle is used to raise a load of 250N through a vertical distance of 30m .What is the efficiency of the system if the work done aganist friction is 1500J?
A:
B:
C:
D:
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Correct Answer

C

Explanation


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