Lab Phy 108 Spring 2018 Midterm 8· The center of mass of an object is the point

Question

Lab Phy 108 Spring 2018 Midterm 8· The center of mass of an object is the point at/for which (circle all that apply): (a) The object may be able to balance (b) All the mass is contained (c) The density is greatest (d) The motion when the object is thrown follows the path that a point particle (roughly speaking, a ball) would follow (e) There is no air resistance The period T of a simple pendulum is given by clock which reads normal time in Milwaukee, here on Earth, is taken to Jupiter, where the acceleration due to gravity (g) is higher, the clock will: 9. .When a pendulum on a (a) Run faster (take less time to swing back and forth) (b) Run slower (take more time to swing back and forth) (c) Behave exactly as in Milwaukee, here on Earth (d) Automatically adjust its oscillations to the different length of Jupiter's day block of stee will ink in water, but a ship, which is constructed largely out of I will sink in water, but a ship, which is constructed largely out of steel, will float. How, specifically, does the ship's design allow this? In your an clearly state a physical requirement for an object to float that the ship satisfies.

Explanation / Answer

For 8 a, b and d are correct

For 9 option b is correct

Because T is inversely proportional to square root of g. If g is higher then T will be Lower. It takes more time  

For 10

the steel block density is concentrated at one point so density higher than water then it will sink .

If we take constructed lorgely out of the the steel then density is distributed . Which is lesser than density of water. Then it not sink

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