EleanorLangon EleanorLangon
  • 01-09-2014
  • Physics
contestada

A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg)?

Respuesta :

y7gm7g y7gm7g
  • 01-09-2014
F= ma
31-mg = m(-2.5m/s2)
31= mg-2.5 m
31 = m*(9.8m/s2 -2.5 m/s2)
31 = 7.3 m
m = 31/7.3
m = 4.25 kg
Answer Link

Otras preguntas

Question 6 of 10 How is the phrase "all men are created equal" interpreted differently by modern U.S. society? A. Originally it referred only to white men, but
Which of the following illustrates the truth value of the given statements? A triangle has four sides, and a rectangle has three sides. T F → F F T → F T T → T
answer the question pls
sequence 32,52,72,92 simplified​
Find the value of x to the nearest tenth. *Will Give Brainliest*
a gene is a segment of mrna
equivalent ratios 5:22=_:66
Determine the intervals on which the function is increasing, decreasing, and constant. A. Increasing x>0; Decreasing x<0 B. Decreasing on all real number
ASAP ITS TIMED 109 4 2 3 3 Which expression is equivalent to X X ? o NO NIC X 27 o 7 3 х
Andrea's Sequoia gets 12 miles per gallon while driving in the city, and 20 miles per gallon while on the highway. The last time she filled up the car it took 1