(i) a 52-kg person riding a bike puts all her weight on each pedal when climbing a hill. the pedals rotate in a circle of radius 17 cm. (a) what is the maximum torque she exerts? (b) how could she exert more torque?

a. 86.7 Nm

b. b. By making sure her foot is on the outermost edge of the pedal aat all times

Explanation:

a. Torque = force  * perpendicular distance

                = (52 kg * 9.81 m/s²)  * 0.17 m

                = 86.7204 Nm

b. Torque can be increased by increasing the force exerted peperndicular to the distance from the fulcrum or by increasing the distance itself. Since the person cannot increase their weight, they have to maximize the distance from the fulcrum

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

6 cos 34, 6 sin 34 trig