A dynamometer D , which is a device used to measure force, is attached to two blocks of masses 6 kg and 4 kg . Forces of 20 N and 10 N are applied on the blocks as shown in the figure. The reading of the dynamometer is

Question

A dynamometer D , which is a device used to measure force, is attached to two blocks of masses 6 kg and 4 kg . Forces of 20 N and 10 N are applied on the blocks as shown in the figure. The reading of the dynamometer is <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/p-norcxiuelffl.png" /> (A) 10N (B) 20N (C) 6N (D) 14N

Tardigrade Admin · Accepted Answer

Make a free body diagram then write force equation for the blocks involving spring force. 20-T=6a T-10=4a ∴ a=1 and T=14 N

Q. A dynamometer $D$ , which is a device used to measure force, is attached to two blocks of masses $6 k g$ and $4 k g$ . Forces of $20 N$ and $10 N$ are applied on the blocks as shown in the figure. The reading of the dynamometer is

$10 N$

$20 N$

$6 N$

$14 N$

Make a free body diagram then write force equation for the blocks involving spring force.
$20 - T = 6 a$
$T - 10 = 4 a$
$∴ a = 1$ and $T = 14$ N

Q. A dynamometer D , which is a device used to measure force, is attached to two blocks of masses 6kg and 4kg . Forces of 20N and 10N are applied on the blocks as shown in the figure. The reading of the dynamometer is

10N

20N

6N

14N