badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
Close

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

⇐ BackProceed to Checkout ⇒
There are no items in this cart.
Continue Shopping
Menu
Grade: 12th pass 

                        
A person of mass 8 kg enters a lift and selects the floor he wants . The lift now accelerates at 1 m/sec^2 for 2 sec , then goes with constant vel . As the lift approaches his floor , it decelerates at the same rate it accelerated . If the lift cable can withstand a tension of 2x 10^4 N and the lift itself has maas of 500 kg , how many persons can it safely carry at once .
3 years ago

Answers : (1)

Eshan
askIITians Faculty
2095 Points 
							Dear student,

The stress on the cable will be maximum when the lift is accelerating upwards. From the equation of motion for the body,

T_{max}=(M+m_{max})g+(M+m_{max})a
\implies T_{max}=(M+m_{max})(g+a)
\implies 500kg+m_{max}=\dfrac{2\times 10^4}{10+1}kg=1818kg
\implies m_{max}=1318kg
Hence number of people it can carry=\dfrac{1318}{8}=164
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on AIPMT

do self financing seats of other states are included in 15% of all india quota Answer & Earn Cool Goodies
100 gm sample of 147% oleum was taken and calculatedn amount of water was added to make sulphuric... Answer & Earn Cool Goodies
A cricket ball mass 250 g collides with a bat with velocity 10 m/s and returns with the same...
A string of length 1 m is fixed at one end with a Bob of mass 100 g and the string makes 2/pi rev /s...
A ball attached to one end of a string swings in a vertical plane such that its acceleration at...
View all Questions »


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 728 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers To Win!!! Click Here for details