An amusement park ride consists of a rotating
circular platform 7.89 m in diameter from
which 10 kg seats are suspended at the end
of 3.49 m massless chains. when the system
rotates, the chains make an angle of 34.4
◦ with
the vertical.
the acceleration of gravity is 9.8 m/s

what is the speed of each seat?
answer in units of m/s

a car accelerates uniformly from rest and
reaches a speed of 34.8 m/s in 12.4 s. the
diameter of a tire is 92.6 cm.
find the number of revolutions the tire
makes during this motion, assuming no slipping.
answer in units of rev.

this is poiselle's equation from fluid mechanic in physics. mech eng

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)