Answer:
128.6 N
Explanation:
To find the force pulling the roller along the ground, we need to find the component of the force that is parallel to the ground. This can be done by using the equation:
where
F is the magnitude of the force
is the angle between the direction of the force and the direction of the ground level
Here we have:
F = 200 N
Substituting into the equation,
Answer:
They combine if they have the same units
Explanation:
I am not quite sure what you mean by this question. I will try my best to answer this.
Velocities combine only if they both have the same units. The linear velocities have the unit meters per second. For example, a linear velocity and an angular velocity cannot combine together because angular velocity has a unit of radians per second.