force from the engine, accelerating the mass, opposed by drag of air and water resistance
that is called the net force; it is a vector sum of all the forces acting on it
Yes, an object at rest can have forces acting on it. The vertical forces acting on an object at rest would include gravity pulling it downward and the normal force from a surface pushing it upward to balance the force of gravity.
The force is said to be "equilibrant" when acting with other forces it would keep the body at rest ie in equilibrium. Hence equilibrant would be equal in magnitude but opposite in direction to the resultant of all the forces acting on the body.
The forces are balanced on a motorboat coasting at a constant speed. The forward force from the motor pushing the boat is equal and opposite to the resistive forces like air and water resistance acting on the boat, resulting in a net force of zero which keeps the boat moving at a constant speed.
That would be the net force acting on the object.
it just does. okay?
Yes, if a book is stationary on a table, the forces acting on it are in equilibrium. The resultant force acting on the book would be zero, as the forces are balanced and there is no net force causing any acceleration or movement.
By extending the lines of action of all the forces acting on the board and finding their point of intersection, you would get the resultant force on the board. This resultant force represents the overall effect of all the individual forces acting on the board.
The third force would need to act in the opposite direction to the resultant of the two initial forces in order to achieve equilibrium for the puck. This can be calculated by finding the vector sum of the two forces acting on the puck.
When pushing a trolley, the main forces acting on it are the force of friction between the wheels and the ground, the force of gravity acting downward, and the normal force exerted upward by the ground on the trolley to support its weight. Additionally, if the trolley is on an incline, there will be a component of the gravitational force acting parallel to the incline.
An object in equilibrium is not moving, as all the forces acting on the object are balanced. If the object were to be in motion, it would no longer be in equilibrium as there would be an unbalanced force acting on it.
There can be forces acting on an object while it is at rest, as long as the forces cancel each out. For example: a block laying on a table feels the force of gravity pulling it down, but the table pushes up with the same force. Therefore, the forces cancel and the object remains at rest.