A 22 kg crate is moving horizontally on the floor at a constant speed. Find the normal force on the crate.
Normal? That is weight.
22*9.8 N
the normal force is equal to the gravitational force ... m g
To find the normal force on the crate, we need to consider the forces acting on it.
The normal force is the force exerted by a surface to support the weight of an object resting on it. Since the crate is on the floor, the normal force is equal in magnitude and opposite in direction to the force of gravity acting on the crate.
Assuming the crate is not moving vertically, we can use Newton's second law which states that the sum of the forces in the vertical direction is zero. The vertical forces on the crate are the force of gravity and the normal force.
Since the crate is moving horizontally at a constant speed, we can assume that the net force in the horizontal direction is zero. This means that the horizontal force acting on the crate is balanced by an equal and opposite force of friction.
Therefore, the normal force is equal in magnitude to the force of gravity acting on the crate, which can be calculated using the equation:
force of gravity = mass × acceleration due to gravity
Given that the mass of the crate is 22 kg and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the force of gravity:
force of gravity = 22 kg × 9.8 m/s^2
So, the normal force on the crate is equal to the force of gravity, which is approximately 215.6 N.