Aperson stands a distance r from a door's hinges and pushes with a force f directed perpendicular to its surface. by what factor does the applied torque change if the person's position and force change to the following? use the definition of torque, with θ = 90°.(a) 2r and 2f(b) 2r and f(c) r and f/2(d) r/2 and f/2

a)

4 times

b)

2 times

c)

0.5 times

d)

0.25 times

Explanation:

= Applied force by the person = F

= distance from the hinge = R

Torque is given as

(a)

= Applied force by the person = 2F

= distance from the hinge = 2R

New Torque is given as

So Torque becomes 4 times

b)

= Applied force by the person = F

= distance from the hinge = 2R

New Torque is given as

So Torque becomes 2 times

c)

= Applied force by the person = (0.5)F

= distance from the hinge = R

New Torque is given as

So Torque becomes 0.5 times

d)

= Applied force by the person = (0.5)F

= distance from the hinge = (0.5)R

New Torque is given as

So Torque becomes 0.25 times

like poles repel so keep pushing north to north and repels funny to see this

talk back to him about the sport and show him your expertise or leave the room