The same mass dose not change but weight does
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 
Answer:
The velocity must be reduced to one third to stay on the road
Explanation:
The sideways force that friction must resist comes from the centrifugal acceleration due to the turn.
fc=mv2Rfc=mv2R
the frictional force is given by
ff=μmgff=μmg where μμ is the static friction coefficient
if the car is not to skid
fc≤fffc≤ff so
mv2R≤μmgmv2R≤μmg
v≤μgR−−−−√v≤μgR
thus vv varies as the square root of μμ
so if μμ is reduced by 9, vv must be reduced by 9–√=39=3
and thus the speed must be reduced to<u> 26</u> m/s
3
Yes that is true, toothpaste has been very debatable over the years. (I really need Brainliest.) Hope this helps!!!!
It’s an assortment of compound molecules
