If the radius of a steering wheel is increased to four times its original value, then the moment of couple acting on the steering wheel for the given forces

Options

A. increase four times.
B. decreases two times.
C. increases eight times.
D. increases sixteen times.

Answer

C

Explanation

`C= F xx d `
` C_(1)= F xx (2 r_(1))`
` C_(2)=F xx (2 r_(2))`
`= F xx 2(4 r_(1))=4 C_(1)`