A 0.20-kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 4.5 m/s. What is the magnitude of the tension in the string at this position?
a. 7.0 N
b. 2.0 N
c. 3.1 N
d. 5.1 N
e. 6.6 N
c
You might also like to view...
Telescopes designed to study the earliest stages in galactic lives should be optimized for observations in
A) infrared light. B) visible light. C) radio waves. D) x-rays.
The primary purpose of a particle accelerator is to
A) make small particles go very fast. B) make small particles achieve large accelerations. C) create particles and study their behavior. D) produce energy for commercial use. E) test new ideas about the law of gravity.
A continuous change in position is called ______________
Fill in the blank(s) with correct word
An unmarked resistor is being used in a circuit. To determine its resistance by making voltage and current measurements, one should connect
A. the voltmeter and ammeter in series with the resistor. B. the voltmeter and ammeter in parallel with the resistor. C. the voltmeter in parallel with the resistor, and the ammeter in series with the resistor. D. the voltmeter in series with the resistor, and the ammeter in parallel with the resistor.