Search any question & find its solution
Question:
Answered & Verified by Expert
A man of weight $50 \mathrm{~kg}$ carries an object to a height of $20 \mathrm{~m}$ in a time of $10 \mathrm{~s}$. The power used by the man in this process is $2000 \mathrm{~W}$, then find the weight of the object carried by the man (take, $g=10 \mathrm{~ms}^{-2}$ )
Options:
Solution:
1392 Upvotes
Verified Answer
The correct answer is:
$50\ kg$
$\begin{aligned} & \text { } \mathrm{P}=\mathrm{w} / \mathrm{t} \\ & \mathrm{w}=\mathrm{p} \times \mathrm{t} \\ & \Rightarrow \quad(\mathrm{m}+\mathrm{M}) \mathrm{gh}=2000 \times 10 \\ & \Rightarrow \quad(\mathrm{m}+50) 200=2000 \times 10 \\ & \Rightarrow \quad \mathrm{m}+50=100 \\ & \Rightarrow \quad \mathrm{m}=50 \mathrm{~kg}\end{aligned}$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.