Answer:
What forces act on a marble rolling down a ramp?
Answer: Gravity acts vertically downward. A normal force acts from the ruler toward the marble/ball in a direction that is perpendicular to the plane of the ruler. Friction acts in the direction opposite to which the marble/ball is moving. ... Friction slows down the marble/ball.
People will always have something easy to to there handy work
M = 2.2 g = 2.2 x 10⁻³ kg, the mass of the bug.
r = 3.0 cm = 0.03 m, the radial distance from the center.
The angular speed is
ω = 280 rpm
= (280 rev/min)*(2π rad/rev)*(1/60 min/s)
= 29.3215 rad/s
The moment of inertia of the bug is
I = mr²
= (2.2 x 10⁻³ kg)*(0.03 m)²
= 1.98 x 10⁻⁶ kg-m²
Calculate the angular momentum of the bug.
J = Iω
= (1.98 x 10⁻⁶ kg-m²)*(29.3215 rad/s)
= 5.806 x 10⁻⁵ (kg-m²)/s
Answer: 5.806 x 10⁻⁵ (kg-m²)/s
Use the law of conservation of energy.
Potential energy of the object with mass m at the height h is equal to:
<span> E=mgh
</span>
and the potential energy of a spring is equal to <span> <span>E<span>spring</span></span>=<span>1/2</span>k<span>x^2</span></span><span>
where k = spring constant, x = displacement
Since all the gravitational potential energy will be transformed to the spring potential energy, its quite easy to figure out the displacement from this two equations
E= mgh
E= 2*9.8*0.2
E= 3.92
E=1/2kx^2
E=1/2*1225*X^2
3.92*2=1225*X^2
0.0064=X^2
X=0.08 m or 8 cm</span>
This may help if you know which alleles are dominant and recessive.
