A toy car with mass 0.043 kg is propelled by a spring with spring constant 92 N/m onto a track. The track contains a vertical loop of radius 0.15 m. Ignore any losses due to friction and use g = 10 m/s2. What is the minimum compression of the spring necessary for the car to complete the loop...
Well the forces acting on the cork are the buoyant force which is the the weight of the cork which is mg which is:
BF= 3.7*g
but gravity in SI units is 9.8kg/m^3 and I am using CGS units so gravity is 98g/cm^3
So the weight of the cork is
BF= 3.7(98)=362.6
the buoyant force = to the...
okay,
the density of an object is its mass divided by its volume:
D=m/v
so for the cube all i have in the equation is :
D= 58g/v
So i know that in order to get the density i need the volume of the cube.
this is where i am stuck.
One end of a light thin string is attached to the bottom of a 3.7 g, 42 cm3 cork. The other end is attached to a 58 g cube. The arrangement is placed in water and it is found that with 82% of the cork submerged the cube is held in equilibrium. What is the density of the cube in g/cm3?
I need...