Suppose we replace the mass in the video with one that is four times heavier. How far from the free end must we place the pivot to keep the meter stick in balance?

90 cm (10 cm from the weight)

Explanation:

For the meter stick to be in balance, a zero figure on the net torque must be achieved. Torques about the fulcrum may be applied by the mass hanging from the ending of the stick and also by the stick’s initial weight. We utilize the condition that the net torque has to be equal to zero to attain a relationship involving

1) The space amid the left end of the stick and that of the fulcrum

2) the space between the center mass of the stick and that of the fulcrum.

These two distances is expected to add up to a constant.

new communications technology has affected the way social movements are organized because nowadays, social movements rely on social networks and the media to get different people with a similar way of thinking in contact, and thus, get them to mobilize for a greater cause.

individuals only participate in collective action when they feel identified with it. is in this aspect that social media becomes relevant, because it guarantees communication among all individuals and organizes the social actions that are going to be carried out, i.e., the social movements.

in addition, being covered by the media is important to validate the message and make it relevant in the social agenda, as well as to reach more people who can share interests, appealing to public sympathy for their cause.

in conclusion, it is by social networks and social media that social movement is given birth; by connecting different individuals with similar ideas and organizing them to mobilize for a greater cause.