Question

Two 10 kg.wts are attached at the two ends of a string which passes over a Pulley the tension on the string is​

Answer 1

Answer:

Tension on the string is 98 N.

Explanation:

• Tension is a pulling force which is developed in a string, cable or rope when a force is applied on it.
• Tension ia a force, so its S.I. unit is Newton (N).

Given that :

• Two 10 kg weights are attached to the two ends of a string which passes through a pulley.

Solution:

• Considering, string is extensible, frictionless and is of negligible weight.
• In the free body diagram,

Tension in the string = Weight of 10 kg block.

$tension \: T \: = mg \\ = 10g \\ considering \: value \: of \: g = 9.8m/ {sec}^{2} \\ T = 10 \times 9.8 = 98 \: N$

• Hence, tension in the string is 98 N.

Answer 2

Answer:

The tension in the string is 98 N.

Explanation:

• The weights given to us is 10Kg
• Now by drawing free body diagram we get
  $10g - T = 10 a$
• Now as we know body will be in equillibrium hence a =0 and the acceleration due to gravity for earth is 9.8 $m/sec^2$
• Now the equation becomes
  $10*g = T\\T = 10*9.8\\T=98N$
• Hence the tension in the string is of 98 N