A therapist is helping a patient with stretching exercises. She pushes on the patient’s foot with an average force of 200 N. The patient resists the force and moves the foot 20 cm toward the therapist. How much work did the therapist do on the patient’s foot during this stretching exercise?
To calculate the work done, we need to use the formula:
Work = Force × Distance
In this case, the force exerted by the therapist is 200 N, and the distance the foot moves is 20 cm (which we need to convert to meters).
Converting 20 cm to meters, we have:
20 cm = 20/100 = 0.2 m
Now we can calculate the work done:
Work = Force × Distance
= 200 N × 0.2 m
= 40 Joules
Therefore, the therapist did 40 Joules of work on the patient's foot during this stretching exercise.
To calculate the work done by the therapist on the patient's foot, we need to use the formula:
Work = Force x Distance
In this case, the force applied by the therapist is 200 N and the distance the foot moves is 20 cm.
However, we need to convert the distance from centimeters to meters since the SI unit for work is Joules (J) and 1 Joule is equal to 1 Newton-meter.
Converting 20 cm to meters:
20 cm = 20/100 = 0.2 meters
Now we can calculate the work done:
Work = Force x Distance
= 200 N x 0.2 m
= 40 Joules
Therefore, the therapist did 40 Joules of work on the patient's foot during this stretching exercise.