Question

A. where is the center of gravity of the broom if I cut it at the center of gravity and put each one on a scale whould the two psrts whight the same

A. Where is the center of gravity of the broom that Dr. Hewitt holds up?

at the balance point

at the center of the heavier side of the broom

at the center of the broom

B. When Dr. Hewitt cuts the broom right through the center of gravity, how do the weights of the two sides of the broom compare?

Both sides of the broom on either side of the center of gravity have equal weight.

The shorter side, where the bristles of the broom are, has a greater weight than the handle.

The longer side (the handle) has a greater weight than the bristle side.

C. How does the torque due to the weight of one side of the broom exerted around the balance point compare with the torque exerted by the weight of the other side of the broom around the balance point?

The torque due to the weight of the shorter side (the bristles of the broom) is larger in magnitude than the torque due to the weight of the longer side (the handle), and opposite in direction.

The torque due to the weight of the shorter side (the bristles of the broom) is smaller in magnitude than the torque due to the weight of the longer side, and opposite in direction.

The torque due to the weight of the shorter side (the bristles of the broom) is equal in magnitude to the torque due to the weight of the longer side, and opposite in direction.

Answer 1

A) The center of gravity of the broom will be at the balance point.

B) the bristles will add up the weight, so the side with bristles will be heavier than the other side

C) The torques must be equal in magnitude and opposite in direction because shorter side has more weight but shorter lever arm, whereas other side is light but has longer lever arm.