When a rope is wrapped around a wheel (or pulley) and pulled, the lever arm is the ________ Blank 1 of the wheel and the angle b
1 answer:
You might be interested in
Answer:
1. The change in temperature of the material.
2. The length of the material.
3. The type of material.
Explanation:
The term linear expansion is defined as the increase in length of any conductor when there is a change in temperature. The new length of any wire or rod is given by :
is the initial length of the rod
is the coefficient of linear expansion
is the change in temperature
It is clear that the linear expansion of a material depends on :
1. The change in temperature of the material.
2. The length of the material.
3. The type of material.
So, all options are correct.
Solution :
From the given data,
For the spherical shell is
where x is the radius of gyration and the acceleration of a rolling body on an inclined plane = a
Therefore,
= 0.6 x 9.81 x sin ( 29.7)
Δt = 1.411 s