Chapter13: Electromagnetic Induction
Section: Chapter Questions
Problem 14CQ: Show that and dm/dt have the same units.
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Transcribed Image Text:C. m2g counter-clockwise
(c) Match the directions of rotations induced by the forces about the left end:
A. N counter-clockwise
B. m₁g clockwise
C. m2g clockwise
(d) If you calculate the net torque about the fulcrum Tfulcrumand then about the the left end Tleft, then
for the beam in equilibrium, which relation is true?
Torque about the fulcrum and torque about the left end should be zero
Torque about the fulcrum should be greater than torque about the left end
Torque about the fulcrum should be less than torque about the left end
(e) Calculate d₂.
Enter to 3 significant figures
d₂ = 0.40
X√
Transcribed Image Text:A beam of negligible mass and a length of 1.00 m balances two masses m₁ 16 kg and m₂ = 8 kg. The
distance of m₁ from the fulcrum is 20 cm. Let the distance of m₂ from the fulcrum be d2.
Assume all quantities are correct to 3 significant figures.
m2
m2g
(a) For first condition equilibrium is
m₁g-m₂g.
N=0.
N
O N-m₁g-m₂g-0.
N+m₁g-m₂g=0.
N-m₁g+m₂g=0.
mi
mig
(b) Match the directions of rotations induced by the forces about the fulcrum:
A. N no rotation
B. mg clockwise
C. m₂g counter-clockwise
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