Question

A lift of mass 200 kg is moving upward with an acceleration of 3 m/s^2 if g= 10 m/s^2 then the tension in the string of the lift will be a) 2600 N.
b)2000N c)1300 N. d) 600 Newton​

Answer 1

Answer:

2600N

Explanation:

Given Mass of lift (m) = 200kg

Upward acceleration (a) = 3m/s^2

g = 10m/s^2

Tention (T) = mg + ma

                   = 200*10 + 200*3

                   = 2600N

Answer 2

Given:

A lift of mass 200 kg is moving upward with an acceleration of 3 m/s².

To find:

Tension in string of lift?

Calculation:

• When the lift is accelerating upwards, it will experience a pseudo force (f) downwards. So, the tension on the string will be equal to the weight plus the pseudo force (f)

$T = f + weight$

$\implies \: T = ma + mg$

$\implies \: T =( 200 \times 3) + (200 \times 10)$

$\implies \: T =200 \times \: 13$

$\implies \: T =2600 \: N$

So, tension in the string is 2600 N.