Answer:
x = 1.63 m
Explanation:
mass (m) = 10 kg
μk = 0.3
velocity (v) = 3.1 m/s
Assuming that most of the computers weight is applied on the belt instantaneously, we can apply the constant acceleration equation below
x =
where a = μk.g , therefore
x = /2μk.g
x = (3.1 x 3.1)/(2 x 0.3 x 9.8)
x = 1.63 m
Answer:
Explanation:
In a sonometer , expression for speed of wave produced can be given as follows .
v =
v is velocity , T is tension in wire , m is density per unit length .
Here v is inversely proportional to square root of m . So if m becomes m / 4
velocity changes as follows .
velocity =
=
= 2v
velocity becomes two times . Hence to make velocity two times , mass per unit length has to be changed to one fourth value , keeping tension constant .
