The magnitude of the frictional force acting on the block is 5 N.
How to calculate the magnitude of friction force?
The magnitude of the frictional force acting on the block is calculated as follows;
F(net) = ma
where;
- m is mass
- a is acceleration
Since the block is sliding at a constant speed, the acceleration = 0
F(net) = 0
- F(parall component of weight) - F(friction) = 0
- W sinθ - Fs = 0
Fs = - W sinθ
where;
- W is the weight of the block
- θ is the angle of inclination
Fs = -10 N x sin (30)
Fs = - 5 N
The magnitude of the force = 5 N