Question
If a man lifts 1 kg of load to the height of 2.5 m from the ground‚ then assuming acceleration due to gravity is 10 m/sec2‚ magnitude of the work done by the man is _________.
This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is
25 joules
The correct answer is option 3 I.e. 25 Joules.
To calculate the work done by the man, you can use the formula:
W = m ×g × h
-
m is the mass (1 kg)
-
g is the acceleration due to gravity (10 m/s²)
-
h is the height (2.5 m)
The work done is:
W = 1 × 10 × 2.5 = 25 Joules
So, the magnitude of the work done by the man is 25 Joules.
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