Question

A person holding a block of mass 2 kg. with the help of string. Find tension developed.

a) 10 N

b) 20 N

c) 30 N

d) 40 N​

Answer 1

Answer:

the tension development will be 20 N

Explanation:

it is because :

1 kg=10N

thus,

2 kg=10*2=20N

Answer 2

Answer:

Explanation:

4(g +g/2)-t=4a...(1)

t-2(g+g/2)=2a...(2)

Therefore,

t-3g=2a=>t=3g+2a. Solving eqn 1from eqn (2),

4(g+g/2)-(3g+2a)=4a=>3g=6a=>a=g/2

Hence,

t=3g+2(g/2)t=40N

so the right answer is 40N