Physics: Moments, Levers, and Gears

What is the formula to calculate a moment?

• Moment = Force / Distance

• Moment = Force x Distance

• Moment = Force + Distance

• Moment = Force - Distance

What happens to the output force when the input and output forces are on different sides of the pivot?

• They double in effect

• They cancel each other out

• They act in opposite directions

• They act in the same direction

How can a smaller input force lift a heavier object using a lever?

• By applying the force closer to the pivot

• By applying the force farther from the pivot

• By increasing the gravitational force

• By reducing the weight of the object

What is the required distance from the pivot to lift the rock using a 400 newton force?

• 400 meters

• 2 meters

• 1.96 meters

• 0.4 meters

What role do gears play in machines?

• Decreasing force

• Transmitting turning effects

• Stopping motion

• Increasing speed only

What happens when two interlocking gears of different sizes turn?

• They do not turn

• The larger gear turns faster

• The smaller gear turns faster

• They rotate at the same speed

How does the turning effect change when using gears of different sizes?

• It decreases

• It remains the same

• It doubles

• It becomes unpredictable

What ensures that the total work done by gears remains the same despite the magnification of force?

• The smaller gear rotates more frequently

• The gears turn in the same direction

• Both gears rotate at the same speed

• The larger gear uses less energy