Question

A man hanging from a tree end of a massless rope the mass of man is

Answer 1

Answer:

Answer:

Time t=4 seconds.

Explanation:

Using the formulae of tension we get that tension T - mg = ma, since for the mass tension will be more than its own weight.

300 - 20*10=20a.

On solving we will get the value of a to be 100/20 = 5 m/s^2.

Now, using Newtons second law of motion we will get distance S=ut +1/2at^2.

Since, u = 0m/s so on substituting the values from the question we will get the value of t^2 to be equal to 80/5 = 16 which on solving we will get time t = 4 seconds.