I think the answer is (D)
<span>the amount of knots that you could get if the ropes are pulled taunt are : 4 knots.
These kinds of knots are commonly used for securing tent in outdoor activities or could be used to climb trees, since the knots are really simple to be done but managed to create a secure bond
Hope this helps. Let me know if you need additional help!</span>
Answer:
A. True it's right solids have a definite shape and volume.
The forces on the y axis are:
N-mgcos(60)=0 , wich becomes
N=mgcos(60)
Rember that the friction force is always contrary to the motion of an object and its formula is f=μ * N
The forces in the x axis are:
-f + mgsin(60)= m * a
-μ*mgcos(60) + mgsin(60)=m*a ,
μ = ( m*a - mgf=μ[sin(60) )/ ( mgcos(90) )
Correct answer is A
Voltaic Piles