Examples 1 : calculate the work done to take an object of mass 20 kg to a height of 10 m. (g = 9.8 m/s^2)
Answers
Answered by
4
Step-by-step explanation:
work = force * distance
work = ( mass * acceleration ) * distance
work = 20 * 9.8 * 10
work = 196.0 * 10
work = 1960 J
Answered by
4
Answer:
Work is - 1960 J.
Step-by-step explanation:
m = 20 kg
s = 10 m
g = 9.8 m/s²
F = m g
=> F = 20 * (-9.8)
=> F = - 196 N
W = F * s
=> W = (-196) * 10
=> W = - 1960 J
Here, negative sign is because direction of force and direction of displacement are opposite. So work is negative.
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