Question

a 10 kg aluminium block is dragged on a plain horizontal surfacevat s constantvvelocity of 2 m/sec. a frictional force of 60 N acts on it. what is the net force acting on the block

Answer 1

Given:

A 10 kg aluminium block is dragged on a plain horizontal surface at constant velocity of 2 $\frac{m}{s}$ .A frictional force of 60 N acts on it.

To Find:

what is the net force acting on the block

Solution:

Friction force acting on the body = 60  N.

2nd Law of motion

Net force on the body is equal to the product of mass and acceleration of the body.

$F_{net} = ma$

The aluminium block is moving on a horizontal surface with constant velocity of 2 $\frac{m}{s}$.

Constant velocity = 0 acceleration.

a = 0

$F_{net} = ma\\a = 0 \\F_{net} = 0$

Net force acting on the block = 0 N.