Home
Class 11
PHYSICS
The mass of a lift is 2000kg . When the ...

The mass of a lift is `2000kg` . When the tension in the supporting cable is `28000N` , then its acceleration is.

A

`30 ms^(-2)` downwards

B

`4 ms^(-2)` upwards

C

`4 ms^(-2)` downwards

D

`14 ms^(-2)` upwards

Text Solution

Verified by Experts

The correct Answer is:
B
m = 2000 kg : T = 28000N
`T = m(g+a) rArr a = (T)/(m) - g`
` a= (28000)/(2000) - 10 = 4 m//s^(2) ` (upward motion)
Promotional Banner

Similar Questions

Explore conceptually related problems

The mass of a lift is 2000kg . When the tensioon in the supporting cable is 28000N , then its acceleration is.

An elevator weighs 4000kg When the upward tension in the supporting cable is 48000 N what is the upward acceleration? Starting from rest, how far does it rise in 3 seconds ?

When a liftman takes 5 persons in a lift, the totla mass of the lilft and the 5 persons becomes 800 kg. What is the tension in the supporting cable, if the lift ascends with an acceleration of 2m//s^(2) ? (g=10m//s^(2)

An elevator weighing 5000 kg is moving upward and tension in the supporting cable is 5000 N . Find upward acceleration . Starting from rest , how far does it rise in 10 secound ?

An elevator and its load weigh a total of 1600 kg. Find the tension T in the supporting cable when the elevator, originally moving downward at 20 m/s is brought to rest with constant acceleration in a distance of 50 m.

An elevator and its load weigh a total of 166 kg. Find the tension T in the supporting cable when the elevator, originally moving downwards at 20m//s is brought to rest with constant acceleration in a distance of 50 m.

An elevator and its load wiegh a total of 1600 lb. Find the tension T in the supporting cable when the elevator, originally moving downwards at 20 ft/s is brought to rest with constant acceleration in a distance of 50 ft.

An elevator and its load weigh a total of 800kg Find the tension T in the supporting cable when the elevator originally moving downwards at 20m//s is brought to rest with constant retardation in a distnce of 50m .