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drek231 [11]
3 years ago
10

4. A weightlifter raises a mass mat a constant speed to a height h in time t. Which of the following

Physics
1 answer:
marishachu [46]3 years ago
3 0

Answer:

<h3>a. mgh</h3>

Explanation

The work done by the lifter is equal to its potential energy since he is covering a height and under the influence of gravity.

potential energy = mass * acceleration due to gravity * height

m is the mass

g is the acceleration due to gravity

h is the height

Hence the required workdone = PE = mgh

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