A ladder ‘AB’ of weight 300 N and length 5m is lying on a horizontal surface. Its centre of gravity is at a distance of ‘2m’ from end A. A weight of 80 N is attached at end B. The work done in raising the ladder to the vertical position with end ‘A’ in contact with the ground is (in J).

see full answer

Want to Fund your own JEE / NEET / Foundation preparation ??

Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*

An Intiative by Sri Chaitanya

answer is 1000.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

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

Take Free Test

Detailed Solution

P.E of the system is described by its amount of work done
$\begin{array}{l} w = w_{1} + w_{2} \Rightarrow w = m_{1} {gd}_{1} + m_{2} {gd}_{2} \\ w = 300 \times 2 + 80 \times 5 \\ w = 600 + 400 = 1000 J \end{array}$

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET