Answer:
616.223684211 N
Explanation:
= Resistive force on the wheel = 115 N
F = Force acting on sprocket
= Radius of sprocket = 4.75 cm
= Radius of wheel = 25 cm
Moment of inertia is given by

Torque

Torque is given by

The force on the chain is 616.223684211 N
Answer:
20.6 N
Explanation:
Friction equals normal force times coefficient of friction.
F = Fn μ
On level ground, normal force equal weight.
Fn = W
Therefore:
F = W μ
F = (685 N) (0.0300)
F = 20.6 N
A sound wave is a mechanical wave and cannot travel through empty space. It needs to travel through a medium of some kind. To remember this, the saying "no one can hear you scream in space" is somewhat helpful considering sound waves cannot travel through an empty vacuum like such. An electromagnetic wave ( EM wave ) does not need a medium to travel and can travel freely through empty space.
Explanation:
Derived quantities are quantities dependent on fundamental quantities while derived units are the units of these quantities