Triple beam balance/scale to find mass, and graduated cylinder to find volume
Answer:
it started to move a 1 second
Answer: The spring potential energy must equal or exceed the energy to raise the mass to loop height and the minimum kinetic energy needed to keep the mass in contact with the top of the loop
kd² = 5Mrg
h = kd²/2Mg
Explanation:
at top of loop
Mv²/r = Mg
v² = rg
½kd² = ½Mv² + Mgh'
½kd² = ½M(rg) + Mg(2r)
½kd² = 2.5Mrg
kd² = 5Mrg
½kd² = Mgh
h = kd²/2Mg
Answer:
please find the answer in the attached image, divided in 2 parts.
Answer: Mass of car is 2660kg
Explanation:
Use equation for Kinetic ene)rgy :
Ek=(m*V²)/2
from this eqation you can get mass
m*V²=Ek*2
m=Ek*2/v²
Ek=5.32*100000J
V=20m/s
m=?
m=2*5.32*100000J/(20m/s)²
m=2660kg or 2.66t
