Gujarati
Hindi
4-2.Friction
medium

Block $A$ of mass $30\, kg$ . is resting on a frictionless floor. Another block $B$ of mass $5\, kg$  is resting on it as shown in the figure. The coefficient of static friction between the blocks is $0.4$ while kinetic friction is $0.3$. If a horizontal force of $175\, N$ is applied to block $B$ , then the acceleration of the block $A$ will be ........ $m/s^2$  $(g = 10\, m/s^2 )$

A

$0.5$

B

$0.67$

C

$5$

D

$10$

Solution

since both block will move separatiy, therefore

$\Rightarrow \quad 15=30 \mathrm{a} \Rightarrow \mathrm{a}=0.5 \mathrm{m} / \mathrm{s}^{2}$

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.