AI Mentor

Check Your IQ

Free Expert Demo

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

A load of $200 kg$ is pulled up by $4 m$ . Calculate the work done. $(g = 9.8 m / s^{2})$

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

6780 J

5470 J

7840 J

8760 J

answer is C.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

When a load of

200 kg

is pulled up by

4 m

, the work done is

7840 J

It has been given that mass of the load

(m) = 200 kg

, height through which the load is pulled

(h) = 4 m

and gravitational acceleration

(g)

9.8 m / s^{2}

The magnitude of work done by pulling up the load

(W)

would be equal to the potential gained by the load as a result of being lifted.
Mathematically, Potential energy

(P . E .)

can be expressed as

P . E . = mgh

Where

m

is the mass of the object,

g

is the acceleration due to gravity and

h

is the height of the object. Therefore,

P . E . = 200 \times 9.8 \times 4

\Rightarrow P . E . = 7840 J

Since,

W = P . E .

Therefore, work done in pulling up the load is

7840 J

Watch 3-min video & get full concept clarity

courses

No courses found

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!