Question

plz answer this question ​

Answer 1

Answer:

A.) Ta/Tb = 3:1

Explanation:

Hello friend,

According to the figure,

the 10 kg block will accelerate downwards

since string is different so tension will also different

now,

let the tension in block A be Ta and

tension in blo k B be Tb

and by the free body diagram

we have,

Ta = 3a ..... (1)

Tb = a .... (2)

10g - (Ta + tb) = 10a

= 10g - Ta - Tb = 10a ....(3)

adding all the equations

we will get,

10a = 10g

a = g

now,

from (1)

Ta = 3a

so,

Ta = 3g

from (2),

Tb = a

so,

Tb = g

now,

to find,

Ta/Tb

= 3g/g

= 3/1

Ta/Tb = 3:1

so,

Correct option : A.) Ta/Tb = 3:1

_________________

Extra informations :

• Tension changes with string.
• On a frictionless surface only tension of the spring provides acceleration.
• Tension will always outside the body.

Answer 2

Answer:

A.) 3:1

Explanation:

According to the figure,

tension in block A = Ta and

tension in block B = Tb

now,

we have,

Ta = 3a ..... (1)

Tb = a .... (2)

= 10g - Ta - Tb = 10a ....(3)

(1) + (2) + (3)

10a = 10g

a = g

now,

from (1)

Ta = 3a

so,

Ta = 3g

from (2),

Tb = a

so,

Tb = g

now,

to find,

Ta/Tb

= 3g/g

= 3/1

so,

Ta/Tb = 3:1