Question

fabiana exerts a constant downward force of 130 n on her bicycle pedal with each downward stroke. the length of the bike's pedal crank arms is 180 mm.

Answer 1

The student exerts a constant downward force of 130 N on the bicycle pedal with each downward stroke.

Step-by-step explanation:

The given question is about the force exerted by a student on a bicycle pedal. The student exerts a constant downward force of 130 N on the pedal. The length of the pedal crank arms is 180 mm. The force exerted on the pedal can be calculated using the formula: force = torque / lever arm. In this case, the torque is equal to the force multiplied by the length of the crank arm. So, the force exerted on the pedal is 130 N.

Answer 2

The torque applied to the pedal is 23.4 N·m.

To solve this problem

We can use the following formula:

torque = force × distance

Where

• In newton meters, torque is the torque.
• The applied force is called force (in newtons).
• The distance (measured in meters) between the pivot point and the force application point is called the distance.

The force in this instance is 130 N, and the 180 mm length of the pedal crank arm measures the distance from the pivot point to the force application point. When we translate millimeters to meters, we obtain:

distance = 180 mm × 0.001 m/mm = 0.18 m

Plugging in the values, we get:

torque = 130 N × 0.18 m = 23.4 N·m

So, the torque applied to the pedal is 23.4 N·m.