Spring Constants and Gravitational Forces

The video tutorial covers various physics concepts, including calculating spring stretch using Hooke's Law, analyzing gravitational force changes on the Moon, understanding gravitational field strength formulas, and calculating gravitational force between two soccer balls. It also includes determining spring constant from weight and stretch, calculating acceleration due to gravity on Planet X, understanding mass and weight differences on the Moon, and analyzing a graph to determine gravitational field strength.

What is the stretch in a spring with a constant of 68 N/m when a 12 N force is applied?

• 0.18 m

• 0.22 m

• 0.15 m

• 0.12 m

If the mass of an object is doubled and the distance is also doubled, how does the gravitational force change?

• It doubles

• It halves

• It quadruples

• It remains the same

How is the gravitational field strength near Earth's surface represented?

• G = F^2/m

• G = F*m

• G = m/F

• G = F/m

What is the gravitational force between two soccer balls of 0.425 kg each, separated by 0.5 meters?

• 3.50 x 10^-11 N

• 5.00 x 10^-11 N

• 6.00 x 10^-11 N

• 4.82 x 10^-11 N

What is the spring constant if a spring stretches from 0.4 m to 0.6 m under a 10 N force?

• 50 N/m

• 100 N/m

• 75 N/m

• 25 N/m

What is the acceleration due to gravity on Planet X if a 10 kg object weighs 40 N?

• 4 m/s²

• 3 m/s²

• 9.8 m/s²

• 6 m/s²

What is the spring constant if a spring changes length by 0.1 m under a 35 N force?

• 300 N/m

• 250 N/m

• 400 N/m

• 350 N/m

What is the mass of an astronaut on the Moon if they weigh 638 N on Earth?

• 75 kg

• 60 kg

• 70 kg

• 65 kg

What is the gravitational field strength on Planet X if the weight changes from 0 to 18 N for a mass change from 0 to 6 kg?

• 5 m/s²

• 3 m/s²

• 4 m/s²

• 2 m/s²

What is the weight attached to a spring with a constant of 100 N/m if it stretches by 0.15 m?

• 15 N

• 25 N

• 10 N

• 20 N