Suppose that you are on an unknown planet in a distant galaxy, and you are trying to determine the acceleration of gravity of this planet. the length of a physical pendulum be 0.81 m and the measured period was 1.138 s. determine the gravitational acceleration of this planet?

gravitational acceleration is 24.69 m/s²

Explanation:

given data

length = 0.81

time = 1.138 s

to find out

gravitational acceleration

solution

we will apply here time formula that is express as

T = 2π ×   ................1

here t is time , l is length and g is gravitational acceleration

so put here all value and find g

g =  

g =  

g = 24.69

so gravitational acceleration is 24.69 m/s²

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .