Τετράδιο Εργασιών, σελ. 174 - 176.
Τετράδιο Εργασιών, σελ. 174 - 176.
Τετράδιο Εργασιών, σελ. 174 - 176.
The greater the weight of the bodies in the bucket, the more the rubber band stretches.
Τετράδιο Εργασιών, σελ. 174 - 176.
ελατήριο (spring)
περίβλημα (enclosure)
κλίμακα (scale)
άγκιστρο (hook)
We can measure a force by the effect it causes. The greater the deformation, the stretch of the rubber band, the greater the force.
To measure forces more accurately, we use special instruments, called dynamometers. Dynamometers do not use a rubber band, but a spring.
Τετράδιο Εργασιών, σελ. 174 - 176.
Daphne stretched the spring more than Marilyn did. So the force exerted by Daphne was greater.
Which of the two girls exerted greater force, Daphne or Marilyn? Can you explain your answer?
Τετράδιο Εργασιών, σελ. 174 - 176.
The pencil case has the greatest weight of all the objects in the photograph, which is why the spring from which it hangs has been stretched the most.
The springs in the picture are the same. Which of the bodies you see has the greater weight? Can you explain your answer?
Τετράδιο Εργασιών, σελ. 174 - 176.
To measure forces, we measure the amount of temporary deformation they cause in a spring.
3. Which of the effects that a force can cause do we use when measuring with a dynamometer?
Τέλος…