Answer:
Explanation:
ΣF = ma
Also, work done is given by
W=F.d
Then, applying scalar product
W=FdCos θ
Given that W=247J, d=7m, and F=T=40N
Then,
247=40×7Cos θ
Cos θ=0.8821
θ=arccos(0.8821 )
θ=28.1°
The angle the rope make with the horizontal is 28.1°
interna
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The acceleration is 1 cm/s^2.
The acceleration is defined as the rate of change of velocity.
Here, initial velocity, u = 3/1 = 3 cm/s
final velocity, v = 4/1 = 4 cm/s
time, t = 1 s
Let the acceleration is a.
Use first equation of motion
v = u + at
4 = 3 + 1 x a
a = 1 cm/s^2
Answer
I hope it's helps you
8.7
Answer.
Explanation.
