Physics Olympiad Lift Problem Quiz

What is the initial step in solving the problem involving the lift and bathroom scales?

• Determine the balance of forces in the lift.

• Find the height of the building.

• Calculate the speed of the lift.

• Measure the time taken to reach the 30th floor.

How is the perceived weight related to the normal force in the lift?

• It is independent of the normal force.

• It is equal to the normal force.

• It is the normal force divided by the gravitational force.

• It is the normal force multiplied by the gravitational force.

What is the expression for the acceleration of the lift as a function of time?

• g / (t/10 - t^2/100)

• g * (t/10 - t^2/100)

• g - t/10 + t^2/100

• g + t/10 - t^2/100

What is the speed of the lift after 10 seconds?

• 20 m/s

• 16.35 m/s

• 25 m/s

• 9.8 m/s

What is the significance of the constant in the velocity integration?

• It is always equal to zero.

• It is used to calculate the final speed.

• It accounts for the gravitational force.

• It represents the initial speed of the lift.

How is the distance traveled by the lift in the first 10 seconds calculated?

• By using the suvat equations.

• By integrating the speed with respect to time.

• By multiplying speed by time.

• By measuring directly from the scales.

What is the total height of the building?

• 200 meters

• 81.75 meters

• 100 meters

• 150 meters

What is the deceleration of the lift after the initial 10 seconds?

• -7.3 m/s²

• -5 m/s²

• -9.8 m/s²

• -3 m/s²

What is the minimum mass reading on the scales during deceleration?

• 20 kg

• 15 kg

• 25 kg

• 10 kg

What should be done after solving this problem?

• Calculate the lift's speed at different times.

• Review the solution for errors.

• Rewatch the video tutorial.

• Attempt more problems from the same physics olympiad.