Thank you for registering.

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

Please check your email for login details.
MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

A lift whose cage is 3 meter high is moving up with an acceleration of 2 meter per second square . A piece of stone is dropped from the top of the cage of the lift when it's velocity is 8 meter per second . If gram = 10 meter per second second square , then the stone will reach the floor of the lift after

A lift whose cage is 3 meter high is moving up with an acceleration of 2 meter per second square . A piece of stone is dropped from the top of the cage of the lift when it's velocity is 8 meter per second . If gram = 10 meter per second second square , then the stone will reach the floor of the lift after 

Question Image
Grade:8

2 Answers

dhruba
17 Points
28 days ago
listing the facts …
set the point from where the ball was thrown as origin and follow sign convention
initial velocity of the ball(u)= +8 m/s(not -8m/s) 
height to be covered(s)=-3m
acceleration is only due to gravity(g)_=-10 m/s^2
 
using equation x=ut+1/2at^2  we get  -3=8(t)+1/2 (-10)(t^2)   solving u get t=3/5 sec or 1 sec
 
dhruba
17 Points
28 days ago
saying position would be more accurate wherever i told height ….........thats why we could give the sign negativ eor positive so please do the corrcetion

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free