Questions from College Physics

Q: A skydiver, who weighs 650 N, is falling at a

A skydiver, who weighs 650 N, is falling at a constant speed with his parachute open. Consider the apparatus that connects the parachute to the skydiver to be part of the parachute. The parachute pull...

Q: A hanging plant is suspended by a cord from a hook in

A hanging plant is suspended by a cord from a hook in the ceiling. Draw an FBD for each of these: (a) the system consisting of plant, soil, and pot; (b) the cord; (c) the hook; (d) the system consisti...

Q: A woman who weighs 600 N sits on a chair with her

A woman who weighs 600 N sits on a chair with her feet on the floor and her arms resting on the chair's armrests. The chair weighs 100 N. Each armrest exerts an upward force of 25 N on her arms. The s...

Q: (a) Calculate your weight in newton’s. (b)

(a) Calculate your weight in newton’s. (b) What is the weight in newton of 250 g of cheese? (c) Name a common object whose weight is about 1 N.

Q: What is the approximate magnitude of the gravitational force exerted by the

What is the approximate magnitude of the gravitational force exerted by the Sun on the Voyager 1 spacecraft when they are separated by 17 billion kilometers? The spacecraft has a mass of 722 kg.

Q: Find the altitudes above Earth's surface where Earth's gravitational field strength would

Find the altitudes above Earth's surface where Earth's gravitational field strength would be (a) two-thirds and (b) one-third of its value at the surface. Hint: First find the radius for each situati...

Q: Find and compare the weight of a 65 kg man on Earth

Find and compare the weight of a 65 kg man on Earth with the weight of the same man on (a) Mars, where g = 3.7 N/kg; (b) Venus, where g = 8.9 N/kg; and (c) Earth's Moon, where g = 1.6 N/kg.

Q: Two cars are headed toward each other in opposite directions along a

Two cars are headed toward each other in opposite directions along a narrow country road. The cars collide head-on, crumpling up the hoods of both. Describe what happens to the car bodies in terms of...

Q: At what altitude above Earth's surface would your weight be half of

At what altitude above Earth's surface would your weight be half of what it is at Earth's surface?

Q: The coefficient of static friction between a block and a horizontal floor

The coefficient of static friction between a block and a horizontal floor is 0.40, while the coefficient of kinetic friction is 0.15. The mass of the block is 5.0 kg. A horizontal force is applied to...