To find the frictional force, we can first calculate the force of gravity acting on the object, and then use the coefficient of friction to determine the frictional force.
The force of gravity acting on an object can be calculated using the formula:
Force of gravity (Fg) = mass (m) * acceleration due to gravity (g)
In this case, the mass (m) is given as 15 kg, and the acceleration due to gravity (g) is approximately 9.8 m/s². Plugging in these values, we get:
Fg = 15 kg * 9.8 m/s² = 147 N
Next, we can use the coefficient of friction (μ) and the normal force (Fn) to find the frictional force (Ff). The normal force is equal to the force of gravity acting on the object (Fn = Fg), assuming the object is on a horizontal surface.
Frictional force (Ff) = coefficient of friction (μ) * normal force (Fn)
In this case, the coefficient of friction (μ) is given as 0.25, and the normal force (Fn) is equal to the force of gravity (Fg) which we calculated as 147 N.
Ff = 0.25 * 147 N = 36.75 N
Therefore, the frictional force acting on the object is approximately 36.75 N.