1. Tardigrade
  2. Question
  3. Physics
  4. Two blocks of masses 8 kg and 5 kg are connected with a rod of mass 3 kg (see figure). The upper block is pulled up with a force of 180 N. The tension in the rod in contact with the upper block is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Two blocks of masses 8 kg and 5 kg are connected with a rod of mass 3 kg (see figure). The upper block is pulled up with a force of 180 N. The tension in the rod in contact with the upper block isPhysics Question Image

Laws of Motion

Solution:

Let the acceleration of the system be a
Then (8 + 3 + 5) a = 180 - 16 $\times$ 10 = 20
That is, $a = \frac{20}{16} = \frac{5}{4} m/s$
Tension at P = (3 + 5) $\times$ (g + a) = (3 + 5) $\left( 10 + \frac{5}{4} \right) = 90 \, N$