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1. A load is to be moved using a wheelbarrow. The total mass of the load and wheelbarrow is 60 kg. The magnitude of gravitational acceleration is 10 ms­2 . What is the work done if the handle is raised by 50 cm? a) 35.0 J b) 17.5 J c) 175 J d) 350 J

1. A load is to be moved using a wheelbarrow. The total mass of the load and wheelbarrow is 60 kg. 
The magnitude of gravitational acceleration is 10 ms­2
.
What is the work done if the handle is raised by 50 cm?
a) 35.0 J
b) 17.5 J
c) 175 J
d) 350 J

Grade:10

6 Answers

Nirmal Singh.
askIITians Faculty 44 Points
7 years ago

201-722_download.png

Total load=60kg or 600N

Load arm=70cm=0.70m

Effort arm=70+50=120cm=1.20m

Now,

Load x load arm=Effort x Effort arm

600 x 0.70=E x 1.20

E=350N

Now work done =350 x 0.50=175J


Regards,

Nirmal Singh

Askiitians Faculty

rishav
20 Points
6 years ago
17.5J
rishav
20 Points
6 years ago
175J
me
11 Points
4 years ago
its 175.asdfnhkkkdjkjhszghjzcxnzcxbmdhdshksdZhcb,kjdSkDhbVkjkjbcvbcxkjbzcvkbj,sdfigkSyiefgbfesgdefgbdckbhzxckbgkbhCXkghCghbhxchxczhxhxhxhkjkhsddsmbcghsd
Tabu
13 Points
one year ago
Total load= 6skkekwkekwkwkwkwekkekekeejejheebbebebebennenrjfjfjeieiiwoeitigigidjdjdjndnsnenfnfnejekwowowoeidifufufhfnfnfndndmdkkd
Aadrish Deb
11 Points
6 days ago
Load*load arm= effort * effort arm
600* 0.70= e*1.20
e= 350

Now work done =350 x 0.50=175J

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