1. Here are the densities and radii of planets in our solar system (in grams per cm3 and km, respectively) Mercury 5.4 g cm-3 2,440 km Venus 5.2 g cm-3 6,052 km Earth 5.5 g cm-3 6,378 km Mars 3.9 g cm-3 3,396 km Jupiter 1.3 g cm-3 71,492 km Saturn 0.7 g cm-3 60,268 km Uranus 1.3 g cm-3 25,559 km Neptune 1.6 g cm-3 24,764 km How much would you weigh on these different planets?

1. Here are the densities and radii of planets in our solar system (in grams per cm3 and km, respectively)
Mercury 5.4 g cm-3 2,440 km Venus 5.2 g cm-3 6,052 km Earth 5.5 g cm-3 6,378 km Mars 3.9 g cm-3 3,396 km Jupiter 1.3 g cm-3 71,492 km Saturn 0.7 g cm-3 60,268 km Uranus 1.3 g cm-3 25,559 km Neptune 1.6 g cm-3 24,764 km
How much would you weigh on these different planets? 1 pound is equal to 0.453592 kg.
2. Consider an Atwood’s machine consisting of two masses connected by a string which is over a pulley, as shown in the picture.
a) Draw a free body diagram for both block A and block B. b) Apply Newton’s second law to both block A and block B. c) the mass of block A is 14 kg while the mass of block B is 6 kg, find the tension in the rope.
3. Consider a modified Atwood machine, with a mass sitting on a table connected by a string which stretches over a pulley connected to a hanging mass. Friction is ignored.
a) Draw a free body diagram for both block 1 and block 2. b) Apply Newton’s second law to both block 1 and block 2. c) If the mass of block 2 is 20 kg while the mass of block 1 is 5 kg, find the tension in the rope.