Question

A 65 kg horizontal force is just sufficient to draw 1300 kg. block at level table surface a
uniform speed. The co-efficient of friction is
(A) 0.08
(B) 0.1
(C) 0.05
(D) O 15​

Answer 1

Given:

A 65 kg horizontal force is just sufficient to draw 1300 kg. block at level table surface a uniform speed.  

To find:

The co-efficient of friction is

Solution:

From given, we have,

A 65 kg horizontal force is just sufficient to draw 1300 kg. block at level table surface a uniform speed.  

⇒ F = 65 kg

⇒ N = 1300 kg

we use the formula,

F = μN

where, μ = co-efficient of friction

⇒ μ = F/N

μ = 65/1300

μ = 0.05

Therefore, option (C) 0.05  is the correct answer.