Answer:
Explanation:
Natural length of the string is given as
length of the string while block is hanging on it
extension in length is given as
now we have strain in the string is given as
similarly we will have cross-sectional area of the string is given as
now the stress in the string is given as
Now Young's Modulus is given as
Answer:
a)
b)
Explanation:
From the question we are told that:
Velocity
Time
a)
Generally From Newton's motion equation for Average acceleration is mathematically given by
Since its from Rest Therefore
b)
Generally the equation for Average Velocity is mathematically given by
Answer:
The average power is 15.26 W.
Explanation:
Given that,
Force = 29 N
Radius = 0.27 m
Time = 1.9 s
We need to calculate the power
Using formula of power
Here,
Where, F = force
t = time
r = radius
Put the value into the formula
Hence, The average power is 15.26 W.