3.
A lifting machine, having an efficiency of 80% uses 2500J of energy in lifting a 10kg load
over a certain height. If the load is now allowed to fall through that height freely, its velocity
at the end of the fall will be (g=10 m/s2)
a) 10 ms
-1
b) 15 ms-¹
c) 20ms-¹
d) 25ms-¹
Answers
Answered by
0
Answer:
See the above solution.
Attachments:
Similar questions
Computer Science,
2 months ago
Math,
2 months ago
English,
2 months ago
English,
5 months ago
English,
5 months ago
Geography,
10 months ago
English,
10 months ago
Accountancy,
10 months ago