Question

One end of string which passes through pulley and connected to 10 kg mass at other end is pulled by 100 N force. Find out the acceleration of 10 kg mass in $m/s^2$ $(g=9.8m/s^2)$

• A. 0.1
• B. 0.2
• C. 0.3
• D. 0.4

Answer 1

The correct option is B 0.2

Since string is pulled by 100 N force. So tension in the string is 100 N F.B.D. of 10 kg block
100 - 10 g = 10 a
100 - 10 $\times$ 9.8 = 10 a
$a=0.2m/s^2$