Answer:
F / g = 138 kg
Explanation:
For this exercise let's use Newton's second law
F- W = m a
the force is equal to the back of the balance
in this case the acceleration is centripetal
a = v² / r
we substitute
F - m g = m v² / r
F = m (g + v²/ r)
calculus
F = 80 (9.8 + 11²/17)
F = 1353 N
the balance reading is this value between gravity
F / g = 1353 / 9.8
F / g = 138 kg
Answer:
Wg is positive and WT negative.
(Letters in options are all wrongly written).
Explanation:
Remember that the work of a force is the internal product between the force and the displacement
.
Since the displacement is downwards like the weight, the work done by gravity is positive, while the work done by the tension is negative since it points upwards.
C is the correct answer. Opposites attract!
1. All of the above
2. Lack of consistent sunlight
3. Nonpolluting & Can be developed anywhere
4. Protons and Neutrons
sorry the answer is so late...Hope it still helps u
:)
Also I'm pretty sure all the answers I provided are correct but I'm not sure 4 a fact so plz let me know...