Answer:
T = 51.6 N
Explanation:
We know that maximum tension in vertical circular motion is at the bottom position and thus;
T − Mg = F_c = Mv²/r
Where F_c is centripetal force
Since T − Mg = Mv²/r
Let's make T the subject;
T = Mg + Mv²/r
Where;
T is tension of the string
M is mass of stone
v is speed of stone
r is length of chord
g is acceleration due to gravity which is 9.8 m/s²
From the question,
M = 2Kg
v = 4 m/s
r = 1m
Plugging in the relevant values we can obtain T;
T = M(g + v²/r) = 2(9.8 + 4²/1)
T = 2(9.8 + 16)
T = 51.6N
Answer:
<h3>The answer is 8.2 kg</h3>
Explanation:
The mass of the object can be found by using the formula
f is the force
a is the acceleration
From the question we have
We have the final answer as
<h3>8.2 kg</h3>
Hope this helps you
Answer:
68.57 mile/hour
Explanation:
The distance from Yakima to Ellensburg is 50 miles and you travel with 60 miles/hour for the first 25 miles, then 80 miles/hour for the last 25 miles. The easy way to solve this question is to find the total time needed to travel.
The time needed to travel 25 miles with 60 miles/hour speed will be: 25 miles/ (60 miles/hr)= 0.42 hr
The time needed to travel 25 miles with 80 miles/hour speed will be: 25 miles/ (80 miles/hr)= 0.31 hr
Total time needed to travel 50 miles will be: 0.41 hr + 0.31hr = 0.73 hr
The average speed will be:
average speed= sum of travel distance/ sum of time needed= 50 miles/ 0.73hr= 68.57 mile/hr
Answer:
0.000133046 V
Explanation:
B = Magnetic field = 7 T
t = Time = 20 s
d = Diameter = 2.2 cm
r = Radius =
A = Area =
Induced emf is given by
The induced emf is 0.000133046 V
Answer:
Nitrogen and oxygen
Explanation:
Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions.