Final answer:
The magnitude of the vertical clamping force at point E is equal to the magnitude of the force P applied to the handle of the toggle clamp.
Step-by-step explanation:
The vertical clamping force at point E can be determined by considering the equilibrium of forces in the vertical direction. Since the object is anchored at point P, the sum of the vertical forces must be zero. The force P applied to the handle of the toggle clamp will determine the magnitude of the vertical clamping force at E.
If the force P is directed downwards, the vertical clamping force at E will be equal in magnitude and directed upwards. On the other hand, if the force P is directed upwards, the vertical clamping force at E will be equal in magnitude and directed downwards.
Therefore, the magnitude of the vertical clamping force at E is equal to the magnitude of the force P applied to the handle of the toggle clamp.