a person wants to move a 3.0 kg block for 5.0 m on a frictionless plane. how much work will the person do? show your work.
a. 15 J
b. 74 J
c. 130 J
d. 150 J
plz it's urgent!!!
Answers
Answered by
2
work done is force× displacement
so mass of body =3kg
displacement is 5m
to pull it we have to apply force at least equal to its weight=
W=mg
= 3×10=30N
work done = 30×5=150j
so mass of body =3kg
displacement is 5m
to pull it we have to apply force at least equal to its weight=
W=mg
= 3×10=30N
work done = 30×5=150j
Answered by
0
Answer = D. 150 J
===========
Mass = 3 kg
Displacement = 5 m
We know,
Work done = force × displacement
W = Fs
We also know,
W=mg
= 3 × 10 = 30N
∴ Work done = 30×5=150 J
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