Aforce of 50 n is applied tangentially to the rim of a solid disk of radius 0.12 m. the disk rotates about an axis through its center and perpendicular to its face with a constant angular acceleration of 150 rad/s2. determine the mass of the disk.

m=3.7 Kg

Explanation:

Given that

F= 50 N

r= 0.12 m

α = 150 rad/s²

The moment of inertia of disk about center

I= 0.5 m r²

m=mass   , r=radius

The moment of inertia of disk about O

I' = 0.5 m r²+ m r²

I'=1.5 m r²

The torque produce by force F about O

τ = F x 2r

τ =2 F r

τ = 2 x 50 x 0.12 N.m

τ =12 N.m

We know that

τ = I' α

12 = 1.5 x m x  0.12² x 150

m=3.7 Kg

Mass of the disk m= 3.7 kg

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero.