Answer:
s= 0.11 m
Explanation:
Given that
m = 6.6 kg
Initial velocity ,u= 1.51 m/s
Angle ,θ = 26.4°
Coefficient of friction ,μ = 0.57
The final velocity of the block = 0 m/s
s=Distance cover by block coming to rest
Now by using energy conservation
2 s (μ g cosθ + g sinθ) = u²
2 x s x 10 (0.57 x cos26.4° + sin26.4°) = 1.51²
Now by solving above the equation
we find ,s= 0.11 m
Therefore the answer will be 0.11 m.
Answer:
in projectile motion at maximum height v = 0
we can use the suvat equation to find v(initial)
since in this case v(final) is 0
t = 2.4 seconds
we need to find v(initial) or u
v = u+at
u = v- at
in this case a = g (gravity) = -9.81
u = 0 - (-9.81 * 2.4)
u = 9.81 * 2.4
the negatives become positive sin it’s a double negative ( - - = +)
Answer:
do we have to choose 2 answers here?
Answer:
B. Doubles
Explanation:
if length is halved then more energy is required to make the pendulum rotate. So energy of the pendulum is doubled
Answer:
the vibrating length of the second string 
Explanation:
Formula for fundamental frequency is
from this equation we can say that
frequency is inversely proportional to the length of string
⇒
.........................1
Here 
⇒
now putting values in equation 1 we get
.
