Question

52. A body of mass 50 kg is to be lifted
using a rope of breaking strength of 60 kg
wt. The acceleration with which it can be
pulled up in least interval of time
1) zero
2) g/2 ms?
3) g/4 ms 4) g/5 ms​

Answer 1

Answer:

Explanation:

Given that,

A body of mass 50 kg is to be lifted

using a rope

here mass of the body = 50 kg

and given the breaking strength of the rope = 60 kg

so the tension of the rope = 60g

and force mg = 50g

let the acceleration of the body be a

since body will accelerate upward

so,

T -

Answer 2

Answer:-

$\bold{a = \dfrac{g}{5}}$

Explanation:-

Given:-

• mass (m)= 50kg
• Breaking strength= 60kg wt.
• Hence, tension(T) = 60g

To Find:-

Acceleration with which it can be pulled up in least time interval

Solution:-

Since, the rope is lifted upwards

T - mg = ma

$60g - 50g = 50a$

$10g = 50a$

$a = \dfrac{10g}{50}$

$\bold{a = \dfrac{g}{5}}$________option(4)