Answer:
At r= 0.76 m measured from the axis of rotation, does the tangential acceleration equals the acceleration of the gravity.
Explanation:
at=g= 9.8 m/s²
α= 12.8 rad/s²
r= at/α
r= 0.76m
Yes cats only live up to nine years
Answer:
the minimum value of torque is 101.7 N-m.
Explanation:
Given that,
Mass of bundle of shingles, m = 30 kg
Upward acceleration of the shingles,
The radius of the motor of the pulley, r = 0.3 m
Let T is the tension acting on the shingles when it is lifted up. It can be calculated as :
T-mg=ma
T=m(g+a)

Let
is the minimum torque that the motor must be able to provide. It is given by :

the minimum value of torque is 