Answer:
The strength of the gravitational force between two objects depends on two factors, mass and distance. the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled. increases, the force of gravity decreases
The calculated total mechanical energy will reduce if the oscillation is not perpendicular to the photogate.
<h3>Mechanical energy at the lowest position of the pendulum</h3>
The mechanical energy at the lowest position of the pendulum is calculated as follows;

<h3>When the direction of the motion changes</h3>
let the velocity of the pendulum = vsin(θ)
when the velocity is perpendicular = vsin(90) = v
At any direction different from perpendicular direction, the mechanical energy reduces by;

Thus, the calculated total mechanical energy will reduce if the oscillation is not perpendicular to the photogate.
Learn more about mechanical energy here: brainly.com/question/24443465
1 lb = 4.45 Newtons (rounded)
199 lbs = approx 885 Newtons