Energy is to be stored in a flywheel in the shape of a uniform solid disk with a radius of R = 1.16 m and a mass of 74.0 kg . To prevent structural failure of the flywheel, the maximum allowed radial acceleration of a point on its rim is 3490 m/s2. What is the maximum kinetic energy that can be stored in the flywheel?

v=ir = 3x15 =45 v

wavelength divides in half and speed stays the same.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards