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Arsh Anand
Subject: Science
, asked 2 weeks, 3 days ago
I am attaching two pics one is a solved problem (17) and the other is a solution of a problem where, power of engine is to be calculated. The question is , what is the power of an engine which can just pull a train of mass 5000quintals up an incline of 1 in 50 at the rate of 54 km/hr. The resistance due to friction is 0.8 N/quintal. Take g = 9.8m/s.
My question is why mg is being multiplied by sin Theta at one place and cos theta is being used in the other.
Please refer 17 and 39 (a) in the pic.
Answer
2
Arsh Anand
Subject: Science
, asked 2 weeks, 3 days ago
Please solve and explain this sum.
Answer
1
Parth Bhandari
Subject: Science
, asked 2 weeks, 4 days ago
the work done of an object does not depends upon
a displacement
b force applied
c angle between force
d displacement the initial velocity of the object
Answer
1
Manisha Kumari
Subject: Science
, asked 2 weeks, 6 days ago
A 60 HP electric motor lifts an elevator
having a max. total load capacity of 2000 kg.
If the frictional force as the elevator is
4000N, the speed of the elevator at full load
is close to:
(1 HP = 746W, g = 10ms?2
)
Answer
1
Drishti Dua
Subject: Science
, asked 2 weeks, 6 days ago
Please tell the answer of
Question no 6
Answer
1
Drishti Dua
Subject: Science
, asked 2 weeks, 6 days ago
Please tell the answer of
Question no 5
Answer
1
Drishti Dua
Subject: Science
, asked 2 weeks, 6 days ago
Please tell the answer of
Question no 4,5,and 6 .
Answer
1
Drishti Dua
Subject: Science
, asked 2 weeks, 6 days ago
What would be the answer of these questions
Answer
3
Drishti Dua
Subject: Science
, asked 3 weeks ago
Please tell the answers of the following questions ??????
Answer
1
Sahil Negi
Subject: Science
, asked 3 weeks, 1 day ago
Please answer me fast
Answer
1
Harsh Choudhary
Subject: Science
, asked 3 weeks, 1 day ago
Answer me fast of the question
Answer
1
Kaashvi Sharma
Subject: Science
, asked 3 weeks, 1 day ago
Experts, I think there is an error in this question from Work, Power and Energy. The kinetic energy mentioned in the question is 20J but the solution is showing it as 200J. Is this an error or have I missed some step in between?
Answer
2
Ayu
Subject: Science
, asked 3 weeks, 2 days ago
Please send solution of attached Question with detailed explanation for the question.. Thanks for the message
Answer
1
Aarushi
Subject: Science
, asked 3 weeks, 2 days ago
Please answer this
Answer
1
Aarushi
Subject: Science
, asked 3 weeks, 2 days ago
Please solve this question
Answer
2
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What are you looking for?

My question is why mg is being multiplied by sin Theta at one place and cos theta is being used in the other.

Please refer 17 and 39 (a) in the pic.

a displacement

b force applied

c angle between force

d displacement the initial velocity of the object

having a max. total load capacity of 2000 kg.

If the frictional force as the elevator is

4000N, the speed of the elevator at full load

is close to:

(1 HP = 746W, g = 10ms?2

)

Question no 6

Question no 5

Question no 4,5,and 6 .