Question

An experimental device imparts a force of magnitude F = 47 lb to the front edge of the rim at A to simulate the effect of a slam dunk. Determine the moments of the force F about point O and about point B. Finally, locate, from the base at O, a point C on the ground where the force imparts zero moment.

a) Mass of the object
b) Acceleration of the object
c) Energy of the object
d) None of the Above

Answer 1

The moments of the force F about points O and B can be determined using torque calculations. The answer to locating a point on the ground where the force imparts zero moment is 'None of the Above.'

Step-by-step explanation:

To determine the moments of the force F about points O and B, we need to calculate the torque of the force about each point. The torque is given by the formula:

Torque = force × perpendicular distance from the point of rotation

a) To calculate the moment about point O, we need to find the perpendicular distance from the line of action of the force to point O. Assuming the distance is d, the moment is:

Moment about O = F × d

b) To calculate the moment about point B, we need to find the perpendicular distance from the line of action of the force to point B. Assuming the distance is e, the moment is:

Moment about B = F × e

c) To find a point C on the ground where the force imparts zero moment, we need to find a point where the perpendicular distance from the line of action of the force is equal to zero. This means that point C should be on the line of action of the force.

Therefore, the answer is None of the Above.